Based on my interactions with Sam, he doesn't seem like the kind of guy who would ever do this for PR. I think he just somehow became aware of this company and,

Based on my interactions with Sam, he doesn't seem like the kind of guy who would ever do this for PR. I think he just somehow became aware of this company and, in classic sama fashion, decided it should not fail due to SVB, reached out to the founders, promptly wired them money.