Investing in assets expected to appreciate can be a form of earning to give (not that Twitter would be a good investment IMO). That’s how Warren Buffett makes money and probably nobody in EA has criticized him for doing that. Investing in a for-profit something is very different and is guided by different principles from donating to something, because you are expecting to (at least) get your money back and can invest it again or donate it later (this difference is one of the reasons microloans became so hugely popular for a while).
On the downside, concentrating assets (in any company, not just Twitter) is a bad financial strategy, but on the upside, having some influence at Twitter could be useful to promote things like moderation rules that improve the experience of users and increase the prevalence of genuine debate and other good things on the platform.
SBF has demonstrated ineptitude in that FTX did fail. If this is a ploy, it’s possible this an inept one (an inept ploy can cause debate over whether it is a ploy) (so can a semicapable ploy).
Maybe SBF was immoral, maybe SBF could be a galaxy-brained EA who bit the St. Petersburg Paradox bullet (which bullet he bit on Tyler Cowen’s podcast), maybe something else. Because EA orgs don’t know what happened, that’s evidence that EA orgs should be preparing against both those things happening in the future. Only one cause was primary in reality, but there are nearby possible worlds where something else was the cause. (Posts have been made on this forum discouraging EAs from being galaxy-brained and immoral, but maybe that’s not enough, I don’t know. Maybe other things are happening in private that are cost-effective preventions).