Perhaps you read a different blog post than I did, but that's not what he signalled at all. He regrets getting involved with ESPN specifically because it was a poor fit for him as a television network that didn't have a suitable business model for 538, and would have preferred if he had taken the competing offers from NYT or Bloomberg in 2013 and then wanted to move to The Athletic in 2018. At no point did he say anything like "I wish I didn't sell 538 and stuck it out alone".

I don't understand the use of the word "actually" in this sentence. The second half does not stand in contrast to the first half. In fact, it explains the first half.

And portraying oneself as having independence and grit when one doesn't actually (which I don't concede happened here) is not what virtue signaling is. "Virtue" here more closely means "morality" than "admirable or sympathetic qualities". Virtue signaling is disingenuously behaving like you are a moral person because it is advantageous, when in fact you lack such morals.

I feel the need to belabor this because accusations of virtue signaling are too often unfounded and amount to a cheap trick to shut down more thoughtful discussion.