Yeah, I don't know where you're from, but over here if you don't have a Whatsapp account in working order you can't... do things.
I hired a company to wire my house and they won't communicate over anything else. I am in maybe five friends and family groups where every social event in my life is put together. I recently noticed a family member and I didn't have each other's numbers anymore, since we only ever communicate over Whatsapp. At work events people will show you a QR code for Facebook or Whatsapp and expect to receive the same back.
I get that a lot of people, especially in the US, don't notice, but Meta won this fight like a decade ago. I don't like it, but that ship sailed as far away as Amazon dominating online shopping.
Same. I never got rid of my Facebook account, though. I still have multiple work relations that will reach out to me that way, and my work phone is the one I have logged in to it. I keep it off my home browsers and personal phone.
But you can't NOT have WhatsApp. It's just not an option. If people thought it was hard to get Americans to stop using Twitter, this is an order of magnitude bigger.
Yeah, I'm in the "have to have WhatsApp" camp because it's the only way I can stay in touch with a bunch of international friends now that I don't have a Facebook account anymore.
There are alternatives, but I don't press about it because at least Meta doesn't monetize WhatsApp...for now
If someone sends me a FB message I’ll usually wait a week or so and then tell them to text/email me for faster response.
Some people, though, already have my phone and email but will send me IG messages, even though I never reply to a single one and ask them (elsewhere) to stop messaging me on there. Several years later they still send me messages.