I don;t care about compatibilist free will; both the fact that cause and effect is universal and we make choices and act upon them has been evidenced and is evidenced with every moment we remain conscious. The obvious standard has to be overturned via extraordinary contradicting evidence. If Unicorns started walking the street then after thorough examination we'd have every reason to say "unicorns are real".
Even if. And "broader and more meaningful". Libet's interpretation is as or more criticized as are the procedural flaws.