Seems this way, yes. 🐶🐾🫡

Impossible it could be an on chain fee with that number, far larger than the total supply. It's probably an unsigned integer overflow that got imputed into being a Big Integer by some magic of Javascript.

stacker.news had a similar glitch recently that caused a ridiculously large post reward, 0.152. It happened by concatenating the ascii coded numbers together instead of mathematically summing them.