I'd understand if these generalizations came from young and inexperienced developers still figuring stuff out, but you also see them from older developers - the

I'd understand if these generalizations came from young and inexperienced developers still figuring stuff out, but you also see them from older developers - they might still irrationally hate on, say, PHP or Java based on their experience with these languages a decade ago, without recognizing that a) PHP and Java and their communities/ecosystems changed and improved since then and b) the problems may have resulted from misuse or lack of experience with the tools at the time.