Wifi card antenna cable got ripped (Triton 500)

Costs will be minor? Let's see. This happened while changing the thermal paste. I must've also falsely attached some cables in the process, since the laptop is really hard to work on due to thinness and inverted mothermoard. What i put in report:

1. The main issue aka one of the tiny antenna cables of the wifi-card (wifi still works, just slow)
2. The cpu fan not working (could not attach the cable correctly, managed to do it for gpu fans though)
3. Some keyboard buttons were not working (on second try everything worked though, even though this was in my report)
4. Laptop monitor is not working after the repaste process (again must've attached the cable incorrectly, but you can still get screen as normal through HDMI/external monitor)

I sent the Laptop to Acer with these issues and guess what? They said the whole mainboard is defect - despite the laptop loading into Windows just fine and everything aside from aforementioned issues working - and want to change it for 1500 euro! Such a rip off. For that price you can get a new device with better specs instead of repairing this 4 year old device.

I'm not even sure if they tested it properly since keyboard was working properly despite what i wrote in the report. They probably read it and put "keyboard defect" in the invoice without testing for easy money?

I also got a Predator 500 and now dread it if it becomes problematic one day even though it is way easier to work on. Remind me to stay away from Acer from now on.

The thing boots up and runs just fine other than the aforementioned issues so the mobo is obviously not dead. Why would i pay the price of a new device with better specs for such a repair just because i'm out of warranty? What sort of customer service is this? Wrongly attaching some tiny cables worth 1500 euro you say? They could even simply solder the antenna on place and attach the cpu-fan corretly or something in a few minutes. But sure, easy money is easy money.