A-pillar trim looks like the rubber seal is damaged. The trim is clipped into place.
B-pillar trim is held on with double-sided tape. Practically impossible to remove without causing further damage to the trim, so plan on replacing it.
Neither are particularly difficult to replace and are not indicative of underlying issues.
Without looking at pictures, I can tell you right now that both D-pillar trims are cracked as well and there's nothing you can really do about it. Every Flex has cracked D-pillar trims.
B-pillar trim is held on with double-sided tape. Practically impossible to remove without causing further damage to the trim, so plan on replacing it.
Neither are particularly difficult to replace and are not indicative of underlying issues.
Without looking at pictures, I can tell you right now that both D-pillar trims are cracked as well and there's nothing you can really do about it. Every Flex has cracked D-pillar trims.