Possibly. It could also be those jokers that are spamming extensions that pin specific websites or add shortcuts deliberately clogging up review queues in order to escalate to harmful behavior during an update, or a talent shortage, or a problem with the signing certificate itself or any number of completely nightmarish scenarios. No meaningful or honest communication on why has occurred from Mozilla yet.
Edit: Oh good they updated it to say 3-4 weeks. They’ve successfully communicated honestly once.
Edit: “It could also be those jokers that are spamming extensions that pin specific websites or add shortcuts.” - * Add-ons that serve the sole purpose of promoting, installing, loading or launching another website, application or add-on are no longer permitted to be listed on addons.mozilla.org . Add-ons Policy Changes 2021 I think I guessed part of this right. More importantly, they’re talking about it now.