Hmm, it could have been removed for safeguarding reasons or maybe they generate a newer version.

I mean these snapshot builds shouldn’t be threated as production build, and I believe you should threat them as having a higher possible chance of bricking your device.

Especially with these builds you need to be alot more informed or it could cause a brick, or even some software doesn’t work.

I kinda compare it to what I always did on dd-wrt, always looking to others and checking for the exact version and only as last resort, if you can wait, then wait, better safe than not.

-edit-
with version I also look to the compile time