Native speakers are of course also very likely to pluralize nouns in the regular way when they don't know the irregular form. Usually, only very common nouns can sustain irregular pluralization. Perhaps dice carries on at all because it is often used both as the singular and plural.

I can't see any reason to think that native speakers are changing their patterns much because of what non-native speakers do or understand.

Yeah Languages with histories of adult learning have been argued to be morphologically simpler, less redundant, and more regular/transparent [2], [7], [28]–[30].

https://journals.plos.org/plosone/article?id=10.1371/journal...