If you want to level up your game, find a new job, or grow into a new role, by all means take a course or training on your own time. All of the concerns that you listed are probably worth spending dedicated time to upskill on.

If you stay in this field for much longer, you’re going to run into a lot of cases where the thing you’ve been doing is replaced with the New Thing. The New Thing will have a couple new ideas, but will also fundamentally handle the same concerns as your Old Thing, often in similar ways. Don’t spend your free time chasing the New Thing without getting something out of it - getting paid, making a project that you wanted to make anyways, contributing to New Thing open source projects.

If you sink work into the New Thing without anyone willing to pay for it, that’s fine, but it means that you might never get someone to pay for it. Most companies are more than willing to hire experienced Old Thing devs on New Thing jobs, and will give you some time to skill up.

My team has just decided to make working smokes a mandatory part of merging a PR. If the smokes don’t work on your branch, it doesn’t merge to main. I’m somewhat conflicted - on one hand, we had frequent breaks in the smokes that developers didn’t fix, including ones that represented real production issues. On the other, smokes can fail for no reason and are time consuming to run.

We use playwright, running on github actions. The default free tier runner has been awful, and we’re moving to larger runners on the platform. We have a retry policy on any smokes that need to run in a step by step order, and we aggressively prune and remove smokes that frequently fail or don’t test for real issues.