I do, but I'm not convinced there is correlation. In front of the computer I can easily multitask and I can just as easily sit for 10 hours straight and code with focus. Outside the digital realm I find it harder to multitask - if I talk to someone on the phone and try to do something at the same time I immediately lose focus on the conversation, I drift away and no longer know what the other person is talking about. I've been wondering if the difference is that there is external input which I can't anticipate - if I do multiple things on the the computer by myself all state exists in my head and it's just a matter of random read access. On the other hand, I also find it hard to cook and go back to the computer for "just one second", every other time I immediately forget that there is food on the stove. I'd say that my attention span has suffered since Covid and I find it generally harder to keep focus, for example when watching TV, but if the focus is there I can still hold it for a very long time, e.g. when programming.