It depends, really. Mostly on who does the project.

Some people hail from hacker town and will use whatever they have at hand. Some learned on vendor tooling, and would want it to be "proper", and would always try to use a vendor SDK with a vendor IDE. Some learned on vendor tooling and prefer not to use vendor tooling for "familiarity breeds contempt" reasons.

As a degenerate case: I've seen software for an ESP32 board that was prototyped entirely in Arduino IDE, and we almost shipped it that way. Because the prototype team cooked, and when the "make it an actual product team" tried to remake it in ESP-IDF, they ended up with less features and more bugs. They got it together eventually though.