[TUSF]

The letter thing is kinda understandable. They should have just used "h" instead of ' (even though that sound can technically be pronounced a number of ways, including as a dental fricative), but for the glottal stop "." which comes at the start and end of names and before particles that start with a vowel, I'm not sure anything else would work, while still being easy to type on a computer. The only other option that comes to mind is using one of the unused letters, but that might be even weirder, considering the latin alphabet doesn't have a letter for the glottal stop.