That proves the animators didn't care.
I wouldn't go that far. I have a theory that the film was rushed because, I swear, I have spotted more errors in this one alone than all of the other sequels combined. Either that or they used up a chunk of their animation budget on Cuba's and Sandra's paycheck.
To be fair, the additional animation company that animated this film, Wang Film Productions, was working on 2 TLBT films and some episodes of the TLBT TV series at the same time.
Also I notice how new sequels get announced 2 years before the actual release date, so I wouldn’t be surprised if TLBT XIII was rushed due to only being in production for 2 years.
I’ve seen other Universal films that are not TLBT films that take TIME to finish production, even in some Illumination films (a recent example is Minions: Rise of Gru, COVID caused production to be delayed, so I kinda see why it took awhile to finish production), so it’s kinda unusual how almost every sequel had a 2 year production line.