Ontario and Quebec together are like 65% of Canadians. I'm in BC and have made my peace with that. I would imagine people in PEI feel a similar way.
Probably people living in Hope or Quesnel also feel similar about being steamrolled by Metro Vancouver and Victoria.
BC, Alberta, and Ontario are under-represented. Ontario, for example, is about 39% of the population of the provinces, but only 36% or so of the seats.
The allocation is an imperfect formula, to be sure. I doubt it makes much of a difference in practice, except as propaganda fuel for foreign influence operations driving Alberta separatism. The degree to which most provinces are under- or over-represented is less than 1%.