Thanks everyone. This was my solution after cleaning up the holes, smoothing/sanding the surrounding area, cleaning with brake clean, and finally making sure I got some of it smashed into the holes. Currently monitoring. Will patch with small sections of PVC and cement if the epoxy doesn't hold for some reason.Plug and patch watch it for 24hrs
Since there's no pressure at all on your vertical pipe and you've got a relatively small hole, I'd suggest you use a bit of pvc primer around the hole, then dab a bit of pvc glue into the hole itself, let set up, and repeat until the hole is filled. Pvc shavings or tiny pieces wouldn't hurt anything either. The pvc glue will bond with the pvc around it and be watertight. If you wanted to do so, a piece of the flex seal tape would be good reinforcement, but the glue would still be a permanent fix.
WAY easier than cutting out a section and splicing in new, and still easier than the rubber bootie fix as well. This would also keep from having something on the inside of the pipe to catch things and maybe clog over time.