Any serious CSV tool has the option to pick a delimiter. Usually semicolon or comma, some offer additional options. The only impact it has is on which fields need quoting. When using comma, all decimals in many langugaes need to be quoted. When using semicolon those don't need to be quoted.
Overall, semicolon feels like the superior delimiter.
Most sensible people don't export formatted numbers (e.g. 100.000,00), but even those are pretty trivial to import.
