The problem with taking vague rhetorical stances like that instead of actually stating how you think it's gotten "significantly worse" is I have no idea what aspect you're talking about, so it's difficult to empathize and try to imagine the downside you're seeing.

I'll go out on a limb and say no, not at all, especially with the qualifier "significantly" on there, which I would take to mean that even the casual Waze fan (like me) should have noticed what's going wrong there.

I don't particularly care about some of the new features like sharing location with friends, but I just don't use them (and they seem plausibly like things they would have added anyway, with or without acquisition).