The lightning thing is pure coincidence dude. If lightning hits your house or close by it can do anything. I have a battery backup on my server rack and enterprise level power conditioner. It could take out the battery pack, save the conditioner, and still take the HDD, monitor, CPU, networking, whatever in my NAS. Or..it could take out nothing at all except blow up a light socket. A transformer could blow down the street from you and provide similar circumstances. No reason to live in fear there over something you can't control. Just use an ethernet cable lol.
Not saying buy the 1650 now, no graphics card is worth it's price right now due to the shortage, scalping, mining, whatever. Get one later when this shit storm calms down with GPUs.
Don't know what mounting that is. I bet you could just get a 40mm Noctua fan and just glue it on and it'd be fine. Low TDP chips don't need that much cooling, especially if it's fine now with ambient.