It's not so much that it's gatekeeping, but there's a big difference between writing bloated Electron applications with few, if any, constraints vs. writing Ada in an extremely constrained environment where there's memory constraints and other overhead that doesn't exist in the web development realm. If the former fails, a user gets slightly annoyed. If the latter fails, people die. One takes way more skill/training than the other. To treat the two on the same level is insincere at best.