Hi Duck,
it's most unusual for Gary to be wrong but in this instance he's talking out of of his backside.
While raising welts on a bearing housing with a centerpunch is indeed a kludge that may be OK to fix a wheelarrow,
bearings installed with a loose fit and fixed with Loctite have more resistance to shock load failure than bearings that are press-fitted.
I was part of the team which demonstrated that fact when diagnosing bearing failures in aircraft landing gear back in the 1950s.
That a loose fit makes a less costly initial manufacturing process and an easier assembly is an added bonus.