I think it's the new normal. The proliferation of new constructors has been fueled by the pandemic and the proliferation of Facebook groups that encourage/support them through mentorships and collaborations. My advice is rather than fretting about how long it's taking, make more puzzles and submit them to other publishers who answer more promptly. In particular, consider those who accept theme queries rather than entire puzzles (which for a Sunday puzzle is everyone except New York Times!). Most others also accept theme queries for daily puzzles (exception LA Times). Generally, most of these respond fairly quickly. But, don't wait - make more puzzles!