The fruits of Sola Scriptura is the tens of thousands of independent Christian churches which dot our landscape each proclaiming their own interpretation of the bible. The sin of pride envelopes the hearts and minds of these Sola Scriptura types who worship not God but their own God given abilities.
The reformation crowd continues to abuse the Word of God to promote their own self importance.
Sola Scriptura isn't in the Scriptures so if you only accept Scripture you can't accept the doctrine of Sola Scriptura. The fact that all Scripture is profitable for instruction, etc., doesn't trump the fact that the Church is called the bulwark of the faith, not the written word. I realize a lot of people argue about there being no need for a priesthood of any sort, but I also realize that Christ constantly called us sheep and told the Apostles to feed his sheep. The Holy Spirit is our comforter who makes it possible to understand what we're taught, as I understand it, and the Apostles were to be our shepherds and ordain others as shepherds to help the sheep stay in the fold and away from harm. I think those are two different roles because even while the Apostles are still alive there were people misinterpreting what they had been taught and who needed a shepherd to set them straight. I just don't see Christ dwelling on what sheep we are and not establishing a system of making sure the sheep had genuine shepherds.
I think a lot of people who realize they need Salvation and that Christ is their Savior sincerely set out to follow Christ but end up back on their old path due to the doctrine of Sola Scriptura. When they're taught that they can rely on their own understanding, their own restatement His Word, and their own interactions with whatever spirit they hear, they're falling for the same lie Eve fell for.
It's useless to argue about, though, since the majority of people realize it's far easier to rationalize any behavior they want to indulge in than it is to change their behavior. As their own final authority on the meaning of Scriptures, there's no need for them to bother changing. Churches ordain queers, marry queers, and proclaim universal salvation, all based on their interpretation of Scriptures. One year a church preaches that no Christian should have tattoos or gamble. When members are getting tats while in Vegas anyway, the same church preaches about the freedom we have in Christ that allows such things. I'm sure everyone can think of their own examples as well.
JMHO
Regards