Is the John Lewis sofa 100kg weight limit correct/practical?

We've just bought a sofa from John Lewis - all good looks great comfy etc.

My Mrs reads the brochure and seen the weight limit ... 100kg, this is a 3 seater sofa. 100kg is 15.5 stone by the way. We called the maker who confirmed it was total, not per person.

I'm 6'4" broad shouldered dad bod and about 17.5 stone alone, never mind adding two extra people with me.

I assume this weight limit is pure "see what we can get away with legally" as you see in terms and conditions, e.g. Disney terms saying if you signed up for a Disney plus account you agreed not to sue us if we derail a roller coaster into your face in our theme parks.

I have a friend who is 5'4 rake thin and his Mrs is shorter/lighter and I don't even think they'd be under 15.5 stone combined.

Bare in mind this is sold as a 3 person sofa not even two. What three "persons" will be 5 stone/33kg each...