No, they are not. They might fit a certain niche (or could once they mature) but neither is a good general-purpose messenger, because their goals and designs inherently limit usability.
No messaging platform fits every use case, but Matrix is great for general-purpose private messaging that anyone, anywhere can easily use, without Google services, without a phone number, and without being vulnerable to shutdown if a single country's laws turn unfavorable. It has other advantages as well. It's not flawless, but is constantly improving, and is already very useful to many people.
If you have a specific criticism that you can actually support with facts, you could bring it up for discussion. Slinging vague attacks that look a lot like something one might see in a poorly-informed reddit post doesn't help anyone.