The filerep warning is a automated system.
I don't know the exact numbers, but lets say the first 100.000 avast users get to see the warning.
If you are avast user number 100.001 that downloads the update(s), you will not get the warning since the system now doesn't see it as a rare (and therefore potentially suspicious) file anymore.
In theory it can be that only the first user gets the warning, but avast has to add the file(s) to the whitelist so it will not trigger the warning anymore.
Note :
This is just a simple explanation on how the filerep warning works.
No use of making it difficult so only a few people understand what I say, right