All (not some) of the most successful devs I've known in the sense of building something that found market fit and making money off it were terrible engineers. They were fairly productive at building features. That's it. And they were productive - until they weren't. Their work ultimately led to outages, lost data, and sensitive data being leaked (to what extent, I don't even know).

The ones who got acquired - never really had to stand up to any due diligence scrutiny on the technical side. Other sides of the businesses did for sure, but not that side.

Many of you here work for "real" tech companies with the budget and proper skin in the game to actually have real engineers and sane practices. But many of you do not, and I am sure many have seen what I have seen and can attest to this. If someone like the person I mentioned above asks you to join them to help fix their problems, make sure the compensation is tremendous. Slop clean-up is a real profession, but beware.