I'm more in project management these days. It makes me laugh when an engineer says "I didn't get any work done today, as it was all meetings" - means I don't work for 20-30 hours/week.
The trick is balance for the role. For engineers it should be a lot more focus time, for PMs and managers it should be a lot more managers, but you should still be able to block out calendars for focus time if you need to - just not all day, every day, forever.
I have been Principal engineer at a company you have heard of, and hands-on CTO at multiple start-ups. I feel qualified in stating that my views hold across multiple job roles, from engineering to project management.
The trick is balance for the role. For engineers it should be a lot more focus time, for PMs and managers it should be a lot more managers, but you should still be able to block out calendars for focus time if you need to - just not all day, every day, forever.