Change jobs, but not because of others moving slowly.
It's amazing that people trust you, but you're worried you'll let your team down. One of the biggest reasons why people leave jobs is because of a lack of growth opportunities, and the longer you stay in your position, the more likely it's going to beat the ambition out of others on the team.
And if most of the code is written by you, this doesn't make you bad for leaving. The easiest code to maintain is code that's written by one person. Sure, some people might get mad and try to shame you, for leaving them to maintain all your code. However, this might be a result of people not believing in themselves. They need encouragement, and some nurturing.
So I don't think the problem is whether you're a 10x developer or not. If you're good, it's like a white tablecloth at a restaurant. The cloth isn't bad just because it got stained. The problem is you're lonely, increasingly resentful, increasingly complacent, and it's not going to be good for those around you.
If you leave the company and it goes well for you, it's also motivating for others since they know the company won't try to sabotage them on their way up. If the company does sabotage you, then this is also good since it'll help you determine the difference between a team that has your back vs a team that wants to use you. Either way, it's important to appreciate them regardless.
So you got to your position because a you cared about others. It's important to not let your accomplishments blind you and overshadow just how much of your success comes from your care for others.
It's amazing that people trust you, but you're worried you'll let your team down. One of the biggest reasons why people leave jobs is because of a lack of growth opportunities, and the longer you stay in your position, the more likely it's going to beat the ambition out of others on the team.
And if most of the code is written by you, this doesn't make you bad for leaving. The easiest code to maintain is code that's written by one person. Sure, some people might get mad and try to shame you, for leaving them to maintain all your code. However, this might be a result of people not believing in themselves. They need encouragement, and some nurturing.
So I don't think the problem is whether you're a 10x developer or not. If you're good, it's like a white tablecloth at a restaurant. The cloth isn't bad just because it got stained. The problem is you're lonely, increasingly resentful, increasingly complacent, and it's not going to be good for those around you.
If you leave the company and it goes well for you, it's also motivating for others since they know the company won't try to sabotage them on their way up. If the company does sabotage you, then this is also good since it'll help you determine the difference between a team that has your back vs a team that wants to use you. Either way, it's important to appreciate them regardless.
So you got to your position because a you cared about others. It's important to not let your accomplishments blind you and overshadow just how much of your success comes from your care for others.