I just started using Twitter this past year. What you get out of Twitter really depends on who you follow, which is not obvious at all to get a hook into and find good accounts you'd value hearing from. I luckily found a few good ones, and you find more by being exposed to content they retweet. It has been a great boon to me because I found a few cogent tweeters of the kind of politics and analysis I like, who I would not have been exposed to otherwise. I feel like it has expanded my political awareness and given me a better informed commentary than I'd find elsewhere. Not just empty heads there. You also get some minor amount of conversational interaction with them and others, and real time commentary on unfolding current events, and some of the jokes that get retweeted are funny. It's easier to see the value of Twitter on the inside than from the outside and its gimmick of short messages.
A lot of content to shift through, so following too many is not so good, and no real way way to sort them into themed content or more favoured tweeters, is my issue.
Would Bill Gates personally fund a UBI? No. The claim wasn't is Bill Gates rich enough to personally fund an American UBI. He would still see his taxes rise considerably and would fall within the tax net to fund a UBI. Those taxes would reach far down the income and wealth ladder, but as long as your UBI is below GDP per capita, it's feasible and a nation could fund it, if it so chose.
Bill Gates just want doesn't want to pay more in taxes. That's what UBI requires: more taxes. Considerable tax increases, but there it is. Tax the economic beneficiaries of the economy and divest to everyone to bring the top and bottom closer to GDP per capita.
Raise taxes and on people like Bezos and Gates for the needs of society.