How do you propose to keep in touch without periodic team meetings (aka scrum)?

Scrum is more than "periodic team meetings". It's daily standups, sprints, sprint planning, backlog grooming, retro (cited lengths for these meetings are aspirational; usually they take 1.5x-2x the recommended times). It's sprint goals and sprint commitments, failure to meet which will be recorded and used against you in performance reviews and disciplinary actions. (Don't tell me they're "forecasts" now. They're commitments because people higher than you in the org chart use them for long-term planning.)

The only reason why major companies undergo Agile transformations -- and why these almost always take the form of Scrum -- is because of the promise of fine-grained metrics, analytics, and control of the SDLC by upper management. That's what the agile consultants pitched to the CTO. Everybody involved in a typical Scrum shop is playing a game of Mornington Crescent -- of pretending to deliver quality software in an organic developer-customer relationship when what they're really expected to deliver is stories, estimates, and burndown data to their bosses (or their bosses' bosses).

Anyway, that has not much to do with WFH, aside from the fact that calling workers into the office comes from the same place as imposing Scrum: the bosses need to feel in total control.

I was introduced to Scrum at 2 companies that didn't use Scrum this way, and am currently at a company that uses it exactly as you describe. It was a shock and it's a real pressure cooker.

Scrum is notorious for not being rigorously implemented. It's pretty much just daily meetings.

You cannot do a scrum meeting over Zoom?

Over zoom is 99% all we do. Office is optional for those who want to get away from their families.

With a task tracker, forum, and chat software.

You get on a call periodically.