Very true, and the GOP has deteriorated even further since 1980. Were Reagan trying to run for President today, he and his supporters would be derided just as Cruz is today.
If anything, Reagan was the real RINO, the Rockefeller Republicans were firmly ensconced in the leadership party, They only tolerated Reagan once they saw that he could defeat Carter, but once he left, and Bush I took his place, it was right back to “Business as Usual.”