Never owned a MacBook before... Is this normal?

Yesterday while watching youtube videos and web browsing, my computer climbed from 60C to 90C in about 20 minutes. Then I realized that the fans were still at idle.

Using a temperature monitoring program I found that the temperature sensors all seemed functional.

Then I installed a fan control program and the fans are both physically capable of spooling up.

So why wouldn't they go above idle even at 90C? Is this normal?

Later I might try to test to see if it will shutdown before the fans finally turn on.