He's not the only one looking for a new job...
The call for compulsory Covid-19 vaccinations for Google employees when they return to working from Google's HQ is making many look elsewhere.
No employer is going to dictate their policies to employees very much in demand, with sort after skills they can take elsewhere, when other employers are willing to accept that vaccination is a personal choice/private decision, and by doing so, get Google talent which might otherwise have remained at Google.
I can't see Google keeping the compulsory vaccination policy in place, as key employees jump ship. For me, there is a line, and this policy crosses it, my personal health decisions are private, and they will remain so.