Yea, tmvn put out a YT video on this. They are just as confused as the rest of us. They claim this is the first time the USCIS has "skipped over" a full week of cases. Actually it happened twice, a week's worth of FEB cases and a week's worth of MAR cases. I see they are now working on those "skipped" cases so you will hear back soon. As I mentioned, tmvn says they will start working on June filers next week, so they are knocking out FEB-MAY cases at a rapid clip. I suggest you watch that video.
The real question is how did this happen? Did someone pitch the files and went fishing, or to the bar? Now that things are electronic, I doubt they tossed the I-129f forms in the trash, never to be seen again. I believe (not certain) that the NOA1 is generated after the forms are scanned into the system. So it seems logical to me that once an NOA1 has been sent, it will get adjudicated at some point. It is not like they have a system Hack. Well on second thought, we are talking about he Biden Administration here. They cannot do anything right.