>They're alternatives, but they are far from being usable alternatives.
It has to be comments like this that drove someone to create n-gate.
WebEx had 324,000,000 users running 73,000,000 meetings in March of this year [0]. As of April, Meet was adding 3,000,000 users per day with 100,000,000 users attending meets per day. [1]
You're obviously right though, they're clearly utterly unusable.
Those are pretty old dates considering how much has changed with the pandemic.
It’s also possible for something to have many users and have them casually brought up as unusable. The OP doesn’t literally mean unusable. They are exaggerating for effect.
To be fair, they said far from being usable. I would support a more tame comparison for dramatic effect, but this is verging on a literal claim which isn't supported by virtually anything.
They're alternatives, but they are far from being usable alternatives.