I agree with this. As a manager I have a lot of meetings and few long stretches for 'deep work' in my day. Yet when I take on some work that truly absorbs me, I find the time for it. Non-essential meetings get postponed, email/Teams can survive an hour or two without a response, HackerNews will still be there at the end of the day ;-) , etc.

I do feel like a lot "distractions" in work hours are avoidable. Some of them are just habit or a dopamine fix or procrastination - kind of like checking Facebook or Twitter on your phone when something else isn't focusing your attention fully.