That always annoyed me to no end, but I wonder if it's because many of us don't work the off season, and so might miss any notices sent later.
Like others, I quit MAX 2 years ago. Last year it worked out to be about the same cost, but then I fired all my non-profits, and a bunch of 1040 clients. This year I'll fire more 1040s. Goal is to hold onto tax season but without extensions and without clients who stress me out, lol. This year the delay in so many K1s is kinda screwing that up, but as long as I have everything done and double checked, I'm ok with just plugging in the K1s later on.