When referring to AWS/GCP, I said, > "at least enough to get around in" Because, you're right -- cloud-based knowledge changes a lot faster (and gets wider) t

When referring to AWS/GCP, I said, > "at least enough to get around in" Because, you're right -- cloud-based knowledge changes a lot faster (and gets wider) than standards-based, and it's actually a lot less useful because you don't know from year to year if the knowledge is even still relevant or if the product is still supported. And, yes, you do need to keep standards-based knowledge top-of-mind, even if you perhaps are not currently building projects on them and even if you can't remember the specifics of syntax etc. Knowing every tool in your toolbox will make you a far better engineer, and, yes, it absolutely can be done.