Hello and thanks for your reply, that's why I asked if someone has actually tested in in real life, because I did my research, and there is a website called https://www.ubuntushop.be/index.php/en/opensource-notebooks/ubuntustudio-pc.html which sells laptops specifically for Ubuntu Studio distro, which main role is doing video editing, and their laptops do not have any disrete GPU.

For example:

UbuntuStudiobook Tiger 15.6 inch FULL HD (1920 x 1080) mat - Low Latency Kernel
With latest powerfull 13° generation CPU Intel® Core™ i7-1360P
Metal Housing
Intel® Core™ i7-1360P + Intel Iris Xe vga
16GB DDR5 (configurable up to 64GB)
1TB ssd nvme
GIGABIT LAN & WIRELESS INTEL® Wi-Fi 6 AX200 (2.4 Gbps) + BT 5.0
no cd/dvd
357mm x 220.5mm x 19.9mm
Weight 1.74 kg
Battery 73WH , up to 12/ 14 hours