I'm also not sure on your question, over the last 5 years, average interruption time is ~ 5 minutes to apply update, which happens roughly once a 3 weeks or so. Once or twice per year, release updates happen and that takes may be 30 minutes of interruption (not totally sure here as I usually grab my coffee and cigarrets and go reading news on balcony, which may easily take ~1h for me).

So for me, updates practically doesn't affect my workflow at all.