When I present myself to people I use one form of my name. Some people I know use nicks. Others use part of my formal name. Due to me being a foreigner, essentially everybody I know uses a slightly different way to name me or pronounce the same name. However, there is consistency. Each person will use the same form for naming me.
This happens with Nim code too. Each programmer will have their convention, and will use it consistently. If you have a team, you establish a convention for the project: you need that anyway because people creating new stuff need a consistent way of naming things and you don't want to later rename everything after a heated discussion. So if you can't keep people on your team from using a project convention, you have a bigger problem than slightly different identifiers in a programming language.
Also, once you start using the different free naming conventions in Nim you grow inmune to them looking ugly. Just like when you know only one programming language everything else looks alien, but when you learn something else you expand your horizon and it stops looking so alien, and it stops being "harder to read". I jump from one convention to another without problem for each project as needed, and doesn't even bother me at all.
tl;dr it's not a big deal, don't let that stop you from learning a very nice language, you could regret it later
This happens with Nim code too. Each programmer will have their convention, and will use it consistently. If you have a team, you establish a convention for the project: you need that anyway because people creating new stuff need a consistent way of naming things and you don't want to later rename everything after a heated discussion. So if you can't keep people on your team from using a project convention, you have a bigger problem than slightly different identifiers in a programming language.
Also, once you start using the different free naming conventions in Nim you grow inmune to them looking ugly. Just like when you know only one programming language everything else looks alien, but when you learn something else you expand your horizon and it stops looking so alien, and it stops being "harder to read". I jump from one convention to another without problem for each project as needed, and doesn't even bother me at all.
tl;dr it's not a big deal, don't let that stop you from learning a very nice language, you could regret it later