All true, but unfortunately it’s too useful not to use now.
They’re wrong. There’s a bigger, warning sign that told me what would happen way earlier. WhatApp was a closed-source, growth-oriented piece of software whose owners intended to get rich via acquisition or IPO. That almost always turns out bad for users in terms of long-term cost of ownership, quality, or security. It’s because the incentives of such startups and the market itself work against privacy or user control. Everything that followed came from this.
People wanting to get trust of users in messaging should consider either shared-source or dual-licensing models where they get paid for the software, the source is inspectable, and they can’t get locked into stagnation after the get rich part. Also a non-profit or public-benefit corporation with such protections built into the charter is worth trying. Never bet on startups. though, if you want something long-term or private unless they’re open-sourcing what they’re building.