Why is MM constantly forcing me into my secondary role for 3-4 games in a row? Hint: Not Support

For whatever reason, these days, the games keep forcing me into my secondary role at top. Is it just me? I'm not fond of getting my secondary more times than I get my primary for a session...Not that I'm bad at top, but I naturally just don't wanna play top right now considering there's only a few champs I can usually pull success with.

Is it cause of the influx of Vayne mains that are abusing Rageblade or something? This is ridiculous.