Not my observation sadly. We've got some excellent 10+ years old tech -- Golang, Rust, Elixir -- yet a lot of companies out there holds on to C#, PHP and Java with an death grip.
And I've worked with all of these. The newer stuff is better in every way except penetration (which is held back by bias and misguided evaluations of the word "safe").
I would, when it comes to parallelism. Java being stuck at OS threads (I know about Loom but it's nowhere near the BEAM VM or goroutines) is not doing it any favors.
PHP at least attempted some isolation between requests (emphasis on attempted) even though it didn't do it very well.
All that being said, people don't like seeing their favorite tech called out and the kneejerk down arrow presses are expected. Programmers are a tribal bunch.
Personally I've found my productivity multiplied with the above-mentioned more modern tech: Elixir, Rust and Golang. But I am also aware many companies would never risk it, and that there is no shortage of people who are OK coasting on old stacks if it pays the bills. Not judging.
