Yes, I still see some job postings that list "8+ years with (niche technology or framework)" (I say niche because asking for 8+ years with something like Java or Ruby isn't exclusionary to generalists, it just means you've predominantly focused on a single ecosystem), but far more often I see "X preferred" "Some exposure to X, Y, Z, or similar preferred", etc. You still want to have deep understanding of a few key technologies, sure, but there's risk hitching yourself too closely to a given tech while excluding everything else that's out there.
Yes, I still see some job postings that list "8+ years with (niche technology or framework)" (I say niche because asking for 8+ years with something like Java or Ruby isn't exclusionary to generalists, it just means you've predominantly focused on a single ecosystem), but far more often I see "X preferred" "Some exposure to X, Y, Z, or similar preferred", etc. You still want to have deep understanding of a few key technologies, sure, but there's risk hitching yourself too closely to a given tech while excluding everything else that's out there.