Weird that you get down-voted but I lose more and more respect for HN these days so I can only say I am not surprised that a common-sense post was given the gray treatment.
I have the same experience as you, I've participated in migrating from PHP to JS, to Elixir, and to Golang. The transition to JS was mostly a performance disaster (not much performance was gained) but at least more devs could help so it was still a big win organization-wise, whereas the transitions to Elixir and Golang were a screaming success on every front: we immediately gained anywhere from 7x to 25x more req/s and the DB load was stable and the request timeout errors dropped by 97.9% on the first day (and were completely eliminated a week later), not to mention the cost of our hosting also dropped by at least 70%.
I am past my phase of "hating" languages but honestly, saying "PHP is not the right tool for jobs X and Y" is a "hate" in the eyes of many anyway. And yeah it's not good enough for big scale. I mean, if you make $1M a month then you likely don't care much if you pay $50K in hosting, sure, but why do you have to spend 5% of your revenue on hosting? There are a lot of modern technologies with which you'd be hard-pressed to justify having more than 2 application servers and 1 DB server (with read-only backups and replicas if sh_t hits the fan).
I have the same experience as you, I've participated in migrating from PHP to JS, to Elixir, and to Golang. The transition to JS was mostly a performance disaster (not much performance was gained) but at least more devs could help so it was still a big win organization-wise, whereas the transitions to Elixir and Golang were a screaming success on every front: we immediately gained anywhere from 7x to 25x more req/s and the DB load was stable and the request timeout errors dropped by 97.9% on the first day (and were completely eliminated a week later), not to mention the cost of our hosting also dropped by at least 70%.
I am past my phase of "hating" languages but honestly, saying "PHP is not the right tool for jobs X and Y" is a "hate" in the eyes of many anyway. And yeah it's not good enough for big scale. I mean, if you make $1M a month then you likely don't care much if you pay $50K in hosting, sure, but why do you have to spend 5% of your revenue on hosting? There are a lot of modern technologies with which you'd be hard-pressed to justify having more than 2 application servers and 1 DB server (with read-only backups and replicas if sh_t hits the fan).