Is TextMate still being maintained? Last time I looked, there were very few signs of life. If that is accurate, the clock is ticking until Apple inevitably drops Rosetta support on Apple Silicon Macs sometime in the (probably not too distant) future.
It's open source, think the developer is on a break from it. He's left it for a few years then done a set of updates in the past or fixed it if it broke because of an Apple update previously.