I wouldn't call it weird, I think it's common in most languages to use local conjugation rules even for foreign words. In French, even though "télécharger/télé

I wouldn't call it weird, I think it's common in most languages to use local conjugation rules even for foreign words. In French, even though "télécharger/téléchargé" is most common and "download" is not really used, I would definitely say "je l'ai downloadé" (and I would expect Quebecers to say mostly that). I have observed a tendency to avoid any conjugation ("je l'ai download") in younger tech workers but I don't know how representative my young colleagues are. It always sounds weird to me and sometimes leads to misunderstandings, in this case for example it's not obvious if the person is saying they "are downloading them" or they "have downloaded it". In Dutch there is no other word than "download" and it gets conjugated like other Dutch words, "downloaden/downloadde/gedownload". And I always feel like saying "gedownloaded", I probably do it half of the time. I thought it was because my Dutch is far from good, but maybe it's just a natural thing if it happens for native German speakers as well.