Since it seems you must work closely with this colleague, perhaps you could look for opportunities to improve together? Maybe taking a training course or attend

Since it seems you must work closely with this colleague, perhaps you could look for opportunities to improve together? Maybe taking a training course or attending a talk together or as a team? Maybe you could even give an internal talk on an area you feel is important that they could benefit from? I would also be careful to assume that your colleague is incompetent. Perhaps the two of you have just very different styles. I once worked with a "solution architect" who would over-engineer every project. Even the smallest utilities would become a "system" with lots of moving parts. Management lauded his technical abilities, but those who later had to maintain these "systems" he created were not as impressed. I could see how he might consider some of the other members of the team "incompetent" because they did not work in the same way.