Not every laptop is built the same, and they are not desktop units with beefy coolers and fans.
One has to understand what their needs are, what is being offered, and finding the best balance. Laptops in general will always be hotter but there are ways to make them cooler to acceptable levels.
Yes it’s called thermal throttling, but it does not degrade and stay degraded.
Change of Thermal Interface Material, clean up of heatsink and general maintenance is required. TIM should be of higher viscosity than of those used on desktop CPU’s.
Laptops require higher viscosity thermal paste given that CPU/GPU reach 80C+ and stay there for some time, which in turn dries out or some pastes bleed out, expansion/constriction of heatsink.
Best TIM material for CPU/GPU is Honeywell PTM7950 phase change sheet. Difficult to handle so freeze before removing protective plastic sheet and application.
Best thermal paste for CPU/GPU: SYY157, Gelid GC Extreme, Phobya NanoGrease Extreme, Thermalright TFX, Coolermaster Mastergel Maker, Thermagic ZF-EX.
Best thermal putty for VRM/VRAM: CX-H1300, UPSIREN U6 PRO, Zezzio ZT-PY6, Jeyi 8100, LK-PRO, EVGA Putty, Penchem TH949-1, Jeyi 8100, Penchem TH855-5, TG-PP10, Penchem TH930, KPT-8, MG860, K5Pro (use only if no other thermal putty is available).
Edit: tell your friend maintenance is a must.
Without knowing specs it’s just like buying a cat in a bag.