Ah, for days of yore, when if the parents wanted to talk to the school, they could… write a letter.

Honestly, I see no small part of the problem here as being that communication is too easy, and it results in a lot of frivolity. Used to be that you had a problem, you figured it out - now you can send an angry WhatsApp message, and because some person hasn’t responded to you within 20 seconds, they are now your problem, and any initiative to figure it out yourself has flown the coop.