The big risk of letting the high touch areas be what get migrated to the modern stack, is that for many companies this is largely driven by the fashion of new hires. And letting new hires drive the technical choices isn't necessarily bad, but you do have a major risk of them not understanding why things were there.

I'd say, historically, you were also lucky in the timing. The last 4 years have been absolutely rock solid for frontend development, compared to the time before. Still way more fluid than I personally think it should be, but I'm willing to ack that things have gotten a lot more stable.

Oddly, the backend has gotten worse in these years. The amount of service related churn that has happened in the past decade has been impressive. And mostly not in a good way. I can hope that we are going to be a bit more stable now.