The purpose of RTO and Collaboration Days isn't to get us all back in the office, being productive, happy little worker bees.
Don't be deceived; RTO is specifically designed to drive some of us to leave 3M. If you with voluntarily they don't have to pay severance and they don't have to announce the layoffs.
They took some baby steps when they yanked the LTIP for everyone below director level (and also gave bonuses to everyone above!), but they didn't see sufficient attrition so they had to go further and roll out RTO.
The drop in employee morale is not a bug; it's a feature. They want to reduce headcount and this is the cheapest way to do it.