That are baseless assumptions, not a single piece of evidence.
That wasn't an "assumption" - your question was already out of the question due to what I said earlier, with as evidence being my post #348
https://www.cyclechat.net/threads/snapped-spindle.309571/post-7579911
"The only problem was clearance: the chain links void the circumference of the bolt heads of the 16T cog."
... so your proposal of grinding the teeth valleys deeper = out of the question, as evidenced, Your Honorable.
One at a time.
At least I wouldn't juggle around with several pieces when a running grinder is involved.
Beside the fact that this rating is a personal opinion, not the absolute truth: At the moment I prefer Eurocents.
E.
I said a table grinder not "a running grinder".
Of course, since the workpiece (a 16T bicycle cog) weights a fraction of the tool (grinder), and thus is much easier to manipulate and target. If one would want to grind/cut a bicycle frame, a running grinder may be easier, as the bicycle parts thieves in foreign neighborhoods of nearby city do.
Feel free to make it "... not worth an eurocent Mister EckyH!"