The last time I remember feeling that I had representation, as a Western Canadian was 3 Prim Ministers ago. I didn't even vote for Harper, but the others simply ignored the gulf between Regina and the Okanagan. It doesn't get better once you move to Ontario. You then realize that your MPs also don't represent you, but at least they're in government now.
I get that Quebec and Ontario have 65% of the population, but why do they have 100% of the seats on a committee that shoves surveillance and gun bans down everyone else’s throats?
Not a clue, but if there are only 7 seats then all 10 provinces can't be represented anyway. I highly doubt political opinions about surveillance are aligned with provincial borders.
Saskatchewan and Manitoba are also over-represented.
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%.