A single energy source having a capacity factor of 10% does not imply that gas plants will have to run 90% of the time.

It ignores storage, over-provisioning, aggregation of uncorrelated sources etc.

Not to mention that wind typically has a much higher capacity factor than 10%.

I don't know what the true number is, but I think this is a low effort take.

Wind turbines across a whole region you'd be looking at 30% maybe 35% or even 40% if they're off-shore. Off-shore the winds aren't slowed by all the random structures humans build but also the turbines are much taller and as your elevation increases the reliability of the wind increases.

PV it varies by how far you are from the equator, 10% is realistic for a Northern country like the UK or Germany whereas in Africa you might see 25% or even 30%