You may have a different experience than me. At my work place, if you mention experiences with "old" technology you are looked down upon and spoken to in a condescending attitude. I'm talking about common sense things like gzip compression and etags for huge downloads. This "magic" is relevant even though they haven't heard about it before as someone fresh out of college.

That spreads to other areas as well and you are not included in technical discussions that are not frontend related. I guess the rationale is that someone who is not up to date in React, are probably not up to date in databases or architecture either. So you get junior developers not really listening to advice from seniors because they are not in the right group...