Old Intel iGPUs were a very different thing. They basically served to provide video and hardware acceleration in browsers, Intel just focused on something more robust with the Xe architecture (which encompasses GPUs from all segments). It's something completely from scratch, without any legacy.
Most Intel CPUs have an integrated GPU. Most recently they have the Xe cores, that come in the dedicated GPUs.
And no, it's not just for browsing and internet. Intel has proposed them could be used for light gaming.
For a while, Intel even proposed using the iGP in conjunction with an AMD or Nvidia GPU to, accelerate game. A Frankenstein form of SLI.
I even tried using it with a 2600K. And it worked in BF3. But it was a bit of a hassle to make it work. And frame times were worse.
Intel might not have a footprint in gaming GPUs as big as AMD or Nvidia, but they have been active, for several decades now.
Regarding processors, 9th generation does not have hyperthreading. A 9700k is 8/8.
The 9900K has HT. The 8700K has HT. The 7700K has HT. And the 6700K. And the 4770K. And the 3770K. And the 2600K.
Even the 9th gen CPU line, had a Pentium with 2 cores and HT.
The reality, is that HT is not a new feature to 10th gen. Not even close.
You are making excuses just like these Youtubers. It's in the box that is to be used from the 10th generation onwards, due to ReBAR.
Good thing you don't manage the Intel's driver team, otherwise all consumers would get is a poor excuse, referring a manual, and a big middle finger.
And good thing there is someone at Intel that looks at this and tries to fix it.
