> Everyone rushing to justify buying a new high performance laptop which they don’t mind throttling because they never needed the performance in the first place??

Time scale is relevant. I want interactive tasks to be faster. I won't notice a 5% improvement in a job that takes long enough for a coffee break, but I will appreciate if more short tasks can cross the threshold of being indistinguishable from instantaneous.

We're talking 100% improvement here. This could be reducing a render from an hour to 20 minutes, a qualitative difference.

If it's the 13 inch model with an iGPU only then yes. The CPU and GPU will share their total TDP.