I feel for you if you were one of the last Intel MacBook Air buyers in 2020 right before the M1 came out, but 5 years of feature updates and still another 2 to go of security patches isn't that bad. There's also OpenCore Legacy Patcher that will very likely allow you to run macOS 26 just fine (and future versions too as long as they still have x86 architecture support)
Personally I deliberately was a buyer of the top end intel 2020 air because I wasnt sure how smooth the rollout of the ARM machines would be, while it was super smooth I have no regrets about my decision, it served me well and I picked up an M4 air earlier this year in anticipation of them dropping more intel support this year.
5 years (really nearly 6 given those machines were released march 2020 and MacOS 26 wont be fully released until sept or oct 2025) of full support and then an additional 2 or 3 years of security updates isnt terrible for those machines