More Iranian apologist crap. The Iranian Revolution spawned all that followed, including the seizure of the Kaaba.
I suggest you read the link I provided, The Siege of Mecca The Forgotten Uprising in Islam's Holiest Shrine and the Birth of al Qaeda by Yaroslav Trofimov
The point is now whether Sunnis perpetrated the seizure of the Kaaba, but what were their motivations and why the Saudis responded the way they did. You just have to take a look at the chronology of events in 1978 and 1979 to see how the Iranian Revolution influenced so many events around the world. The rise of militant Islamic fundamentalism sent shock-waves throughout the Muslim world in much the same way as the Arab Spring.
Khomeini was an existential threat to the Saudi Royal Family as was OBL. The Saudis beheaded the perpetrators of the seizure of the Kaaba. The Saudi reaction to the seizure of the Grand Mosque was to prevent a similar event happening in the Kingdom. Khomeini's incendiary remarks after the seizure is evidence that he was trying to capitalize on the event.
The revolution was doubtless a watershed moment in the history of the region and beyond. After assuming power, Ayatollah Khomeini did not hesitate to challenge the status quo of the entire region in a radical way. He called upon all Muslims, irrespective of sect, to rise up as Iranians had done and rid their countries of monarchies and western-backed dictators. His call did not fall on deaf ears.
Iran became an exemplar for action which, coupled with complex local circumstances, proved very consequential. Shi’ites led by Ayatollah Muhammad Baqir as-Sadr, the so-called “Khomeini of Iraq,” led a revolt against Saddam’s Ba’athist rule in 1980, and a four-month uprising in Saudi Arabia engulfed the peninsula’s east. What’s more, Kuwaiti militants unleashed a bombing campaign, and there was an attempted Iranian-inspired coup in Bahrain. Even Sunni Islamists across the region found inspiration in Iran’s revolution and Iran supported Sunni Muslims in Bosnia during the Balkan Wars and Palestinians via radical Sunni Islamist groups such as Islamic Jihad and Hamas.
Khomeini held special disdain for the Saudi monarchy and challenged the dynasty’s Islamic credentials. In an attempt to buttress his Islamic authority, the Saudi monarch exploited the legitimacy that Mecca and Medina afforded him by adopting the title “Custodian of the Two Holy Sites.” Furthermore, the Saudis took a more proactive anti-Shi’ite and anti-Iranian approach in their foreign policy in order to inundate Iran’s revolutionary message.
Thus, although the Shi’ite-Sunni divide has its origins in Islam’s early years, its explosive modern ramifications, which are manifest in ISIS’s puritanical and venomous anti-Shi’ism, are more directly a consequence of Saudi foreign policy since 1979. Prior to Iran’s revolution, Iran and Saudi Arabia worked closely to counter common threats. They parted ways after the Iranian Revolution when the Saudis responded to Khomeini’s revolutionary call by de-legitimizing Shi’ites across the Muslim world as a means by which to counter Iran’s ideological challenge and safeguard the continuity of the Saudi royal family’s rule.
Mr. TROFIMOV: Now, at the time, nobody knew about the existence of this Sunni jihadi fundamentalist ideology that later evolved into what is known today as al-Qaida. In fact, the assumption in Washington at the time was that the Shiites, the Iranian Shiites, had taken over the mosque and is also part of the Iranian revolutionary expansion to the rest of the Muslim world. INSKEEP: After your exhaustive investigation of this, you concluded the real culprits were Sunni Muslim fundamentalists. And can you draw a fairly straight line from those Sunni Muslim fundamentalists to the Sunni Muslim fundamentalists who form the leadership of al-Qaida today? Mr. TROFIMOV: There is a very direct connection. First of all, this was the first time that the two components of al-Qaida today - the Wahabi zealots from Saudi Arabia and the jihadi extremists, the outgrowth of the Islam Brotherhood in Egypt - have come together. Just as today's al-Qaida is lead by Osama bin Laden, a Saudi, and Ayman al-Zawahiri, an Egyptian, a veteran of the jihadist groups there, so was this movement in Mecca. The senior leaders there were Egyptians.