I'll never understand the logic behind that app-only nonsense these publishers love to do. It's not going to make me install an app, it makes me read the manga on some shitty aggregator site or drop it entirely.
well, it is a business
they sell products
which the product is manga
to me, your logic is like
Jump is trying to sell you pizza, but they're not open in your local area, so you can only get a taste of it from your generous friend who gifted it to you (or just let you have a bite).
but then you're angry when they build a restaurant in your local area so that you can go through their front door,
and order it, and pay for it legally
I think you're missing the point of fan translations
sure you can pirate it,
just understand that mangaka sell manga so they can also eat
that's why good fan translation teams always remind you to buy the manga if you can
if you're unable to buy it legally, I understand that you might go to aggregator just to be able to consume the product,
I really do,
just... don't be angry with the existence of the legal apps