I haven't been able to get Eclipse to run natively as macOS AArch64 is only available from the 2021-12 version which just borks my project. It seems to be a conflict with the google-cloud-plugin I use for appengine. Still 2021-09 with emulated Eclipse is a major improvement especially since the dev server and build processes can be run natively.
Eclipse 2021-12 runs fine with AArch64. I used the following from the Eclipse Market place which is what caused the trouble — Eclipse m2e - Maven support in Eclipse IDE
And AArch64 is available before 2021-12 (4.22). That the first version for a distributed J2EE download though you can get an earlier version and add in J2EE support.
And SDBG debugging still works (debugging in eclipse). I wasn't able to build the SDBG for Java 11 anymore (I remember it being easy last time) but was able to use the one I'd previously build.