I think the true depth of content moved to be behind paywalls. I consider myself an advanced Frontend engineer and I find only Frontend Masters and specialized (and expensive) courses can really help me fill what gaps I do have or learn something with more depth.
I also read a lot more technical books than blogs too, but I’m finding even those harder to find that are relevant
I also read a lot more technical books than blogs too, but I’m finding even those harder to find that are relevant