Maybe there is a lack of available video courses teaching functional style, it might not be as hard as it seems (wan't for me, but a sample size of 1 is anecdotal). Give it another try perhaps?
Honestly, I nor anyone else has any idea what she or he means by functional since they didn't provide any sort of example, and it's not even clear that the user would even know functional programming if they saw it. They referenced python, so should we assume they don't understand what map does? Map is just a function which is properly documented and easy to find help on. Is the user saying that they aren't able to look up the definition for a function they don't understand? Are they saying they refuse to look up definitions for functions they don't understand? How on earth do they get anything done if they refuse/can't look up function definitions?
What I'm trying to say is that it's very likely the user doesn't even know what "functional" means. They just hear some keyword they don't understand and dismiss anything that follows. Because when you think about it, it doesn't really make any sense that a programmer could be a programmer if they couldn't look up things they don't understand.
Oh yeah, there are not many options nowadays. I know this one which is offered by Coursera: "Functional Programming Principles in Scala". I didn't take it, but it should be helpful if one want to explore that "weird wizardry functional stuff" -and discover that there is not much wizardry at all. Oh and as others stated above, it is not that difficult once you really dive in :)
What I'm trying to say is that it's very likely the user doesn't even know what "functional" means. They just hear some keyword they don't understand and dismiss anything that follows. Because when you think about it, it doesn't really make any sense that a programmer could be a programmer if they couldn't look up things they don't understand.