I agree with this sentiment and feel the same way. I also find this is a frustrating trend in our industry in where a lot of engineers seem to be spending more time learning about "services" from specific vendors than about things like network protocols and their workings and limitations.
> Maybe this is just inevitable evolution of the IT industry but I've noticed two things that are alarming.
I was at the Southern California Linux Expo[1] earlier this month, and one of the really weird things was how many people from Microsoft were presenting and attending (I wasn't the only one - Bryan Lunduke, ex-MSFT, did a podcast episode about it[2]). I think the trends you point out are from a lot of Microsoft, IBM, Oracle, Java, etc people now being forced into the Linux world, because Linux is now the default for new IT projects. Unfortunately they are bringing along their "practices" instead of retraining in good software systems engineering.
