Are 2C4T Tiger Lake processors capable of running 5-6 tabs and MS Teams? Yes. A lot of the work these days is done by GPU or dedicated hardware (in case of audio). NVMe SSD also takes some load off the CPU. And Tiger Lake dual core is as fast as many of the older quad cores. I would take 11th gen dual core over a laptop 4th gen quad core for sure.
Is is smart to buy a dual core in 2022 for 40k? Absolutely not. Work your ass off, save 10k, do whatever. Inflation means 40k is not enough for a new, latest gen laptop. Paying just 25% more will give you like 50% better performance. These dual cores are strictly meant for power efficient/thin and light netbook type designs.