Is X Twitter still worth investing time and money into for marketing

Hello,

A few friends and I were discussing if X (Twitter) is still a worthy social media site on which to build a following, run ads, etc. They argue, "No one uses Twitter anymore", but I argue it still has million of users, and it depends on what audience you're targeting.

I think X still has users and its still worth investing time and money into if your audience is male-dominated and into a niche like tech or crypto, for example. What do you all think?