They could, but there's nothing requiring them to do so. AFAIK the only crypto company who have been hacked (and there are a lot) and returned funds as BTC and

They could, but there's nothing requiring them to do so. AFAIK the only crypto company who have been hacked (and there are a lot) and returned funds as BTC and not in dollars is, ironically, Mt. Gox. Users got repaid in Bitcoin 10 years after the fact. FTX bagholders were compensated ~120% in "equivalent value" dollars. Lost crypto was not repaid.