No it's more of a problem. Because the winning party now has an even smaller share of the vote, and may represent no one's preferences. First past the post vot

No it's more of a problem. Because the winning party now has an even smaller share of the vote, and may represent no one's preferences. First past the post voting allows only two parties: because the winner is whichever party has less competitors for it's ideological niche. It explicitly destroys any concept of a market place of ideas being possible in politics.