As another German, I can confirm that the “first e in mesmer” way is how Germans would pronounce it. See for example 11seconds into this German video also officially from SUSE’s YouTube channel - a SUSE employee and German native speaker who is moderating a series of talks is using that pronunciation.
It’s just a tiny mistake that most Germans are used to hearing Americans make all the time (see also Porsche which is also not pronounced porsh, nor por-shay, but porsh-eh) and will politely ignore, but since this aims to be an educational video, should be pointed out to be slightly incorrect
You could go even further and use hard links. That way, you can have two paths pointing to the same data on the partition, with the space getting cleaned up only after all references to it are removed.