No Saylor didn't tweeted it but with the speed they are accumulating it won't be a shock that they own 20% of Bitcoin supply and let us assume he doesn't do that but anyone can do that if they have money, if a person i really really really rich then sure he can buy 20% of BTC and that's not fair to other people,
See tbh I also don't know am I right or wrong I just had a thought and wanted people's opinion what I am thinking is right or wrong, but trust me HODLING BTC is not a good thing ONLY IF YOU WANT IT TO BE A CURRENCY, otherwise if you treat it as a Digital Gold which was it meant to be then HODLING is not at all a issue.