No..... Since 2018 the rate of virus infections on Mac has increased by 400%, the average threat rate on Mac's is currently 11 per device, Windows currently sits on 5.8. Under half of Mac. A note though this includes malware as well as virus's.
Source; Malwarebytes.
They used to get less, because of lower popularity but due to Mac's coming of age in the last few years there are ample threats now that there is a larger user base.
At a guess, the 32bit version is being flagged because of the way it write protects files that are in use, it is getting flagged as a crypto locker.
You can happily let the anti-virus delete the file if you intend to play the 64bit version.