This is nothing new. Microsoft went through this with OneDrive consumer as people were storing terabytes worth of ISOs, movies, etc. Any service that has a 'free unlimited' tier which becomes popular eventually will not have a 'free unlimited' tier.

GSuite -- just move to M365. That will solve most of the problems encountered with GSuite.

I don’t like the call out of LTT for using a service they were paying for in the intended way.

If you advertise “unlimited storage” then anything from 100 megabytes to over 500 petabytes is fair game.

If you don’t agree then don’t advertise “unlimited storage” as it’s false advertisement (fraud).

Anything worth paying for will be limited by real world factors --- one way or another.

Suggesting otherwise is unrealistic and thus false advertising.