I am not convinced that all his actions since being forced to follow through with the buyout hasn't been to do just that. He is the kind of person that always has to feel like he won (if only to himself), while also being "important/cool" enough to be in the spotlight. He wanted to bluff Twitter while trying to look like he was "fighting against censorship". But Twitter called his bluff and tried to make an example of him so other rich folks wouldn't go around doing shit like that. Which also blinded them to the kind of crazy rich dick Musk is and how far he is willing to go to "win". So they forced the buyout and were likely thinking that the massive influx of money would be overall a good thing and just be ready to make some minor changes here and there if Musk really pushed as the main shareholder.
Which might have worked if he were a "normal" liberal capitalist. However he immediately came in and tried to either quickly cut costs in order to drive stock prices up as investors or folks trying to pull a new GME rush so he could sell off and get money back. Or to make sure that the folks that forced him to buy are able to see him slowly and publicly drag the company down and turn it into a laughing stock. While also maybe trying to eventually change it into the "everything" network he has dreamed about ever since he got the "X" domain. With all the other extreme and sudden changes done on whims, it isn't exactly a bad time to just say wild ideas to see how people react.
Since lots of people are most certainly not going to pay for "Blue" every month. $1 a year does "seem" like a small enough number to convince lots of normies that are already conditioned into thinking everything should be a monthly/yearly subscription. Which could (if everyone were to actually pay in addition to normal ad-rev) also be an attempt to pump stock prices as it would be one of the only chances of the company making money and therefore allow him to sell off.