Really? You must have visited some very strange Baptist and "other evangelical" churches. I haven't been in or heard of any that didn't follow Matthew 28:19: "Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit"
Regretfully, I would guess that you have the same problem that the Orthodox guide had. That is, you heard rumors from others and believed them without investigating. You really need to learn more about non-Orthodox Christianity before blindly believing what an ignorant person tells you.
Well, I would not have made the statement that the person doing the tour did, so I really don't have the same problem. If no Baptist church baptizes in the name of Jesus alone, then I stand corrected. I thought there were some small offshoots that did.
I do know that there are some churches that do this, but wouldn't for the life of me be able to identify exactly which denominations they would be, and thus wouldn't have said anything at all in that situation.
Regardless, in those cases, anyone entering the Orthodox Church from one of those bodies must always be received by baptism. My point was that the guy probably got his wires crossed because of being aware of a reception from one of those bodies, and it appears that he added insult to injury by wrongly identifying as "Baptist" the denomination from which the person came.
In general, I would put my knowledge about Baptist beliefs up against the average Baptist seminary professor's knowledge about Eastern Orthodoxy any day. Enlightenment and education are always a good thing, in both directions, and I'm always happy to learn more, as I just did. :-)