As a happy user of Signal (no bugs or incidents from my viewpoint), I regardless chime in to say a word for decentralization. :)

Signal is centralized:

• there is a single Signal implementation, with a single developing entity
• you have to install its mobile version before you may run the desktop version

There exist protocols like Tox which go a step beyond Signal and offer more freedom -> have multiple clients from diverse makers (some of them unstable), don’t have centralized registration, and don’t rely on servers to distribute messages - only to distribute contact information.

In the grand comparison table of protocols (not clients), Tox is among the few lines that’s all green (Signal has one red square).

If they overcome / disable ad blocking, they will lose browser market share - and people don’t design websites for marginal browsers with exotic features.