Forming coalition is what matters. Multiparty democracies don’t hand out medals for just being biggest. Usually all it gets you is first shot at forming government, which in this case by this moments estimate will fail.

It exactly matters who is and isn’t willing to work with you. In coalition democracies that is the most important thing. Depending on situation “we won’t work with you” stuff is decades lasting red lines or feuds.

Plus of course every government is only as good as their last terms governing. One is always at risk of losing the next election, if one messes up.