A bit of it. But it is besides the point: A messenger, that is working reliable and intentionally designed for the masses - does not come with the need, to fiddle with configs, to get basic functionality working.
I do not like Meta, but I never experienced with whatsapp, that someone send a message and this message just vanishes, so the sender thinks he is getting ignored. But exactly this happened way too often with signal.
But it's not fiddling with Signal configs, it's un-breaking the broken power management software phone manufacturers add on top of AOSP. This issue is not specific to Signal and if it were in their power to code around it, they would. Other apps get affected in the same way.
Whatsapp, being so popular, gets whitelisted. It has to work or people would be telling each other "don't buy Samsung!" (not unlike the situation with Huawai since the Play store got removed from their phones).
Messages getting lost entirely is a whole separate matter - so you got the two ticks telling you it'd been delivered, but nothing at the recipient's end? Was this a long time ago? I would stop using it too if I had that problem, I agree.
"Messages getting lost entirely is a whole separate matter - so you got the two ticks telling you it'd been delivered, but nothing at the recipient's end? Was this a long time ago? I would stop using it too if I had that problem, I agree."
This is the matter I am mostly talking about. Everything else is annyance.
As far as I remember, it was mostly only 1 tick, but likely also an instance with 2 ticks (grey) - but no trace ever on the recipent.
It happened often during the peak of new users coming to signal, with the latest whatsapp drama ( I use signal since the beginning), but since then not that I am aware off. But it did erode trust for me and others, so I cannot safely recommend it anymore.
I do not like Meta, but I never experienced with whatsapp, that someone send a message and this message just vanishes, so the sender thinks he is getting ignored. But exactly this happened way too often with signal.