Assalamu alaykum

I was wondering what are your opinions about online classes. In my opinion I have seen many many reverts who are going to online classes (mashAllah) but this deters them from going to the masjid and finding a good scholar, the same can be said for "raised" muslims. I have also seen uneducated people give classes which is worrying. Obviously there are classes that are taught by Ulema but from what I have seen most reverts (as I am a revert most of the people I know are reverts) are "studying" online.
What are your opinions?