I know what you mean. I'm trying to find a real answer to this that doesn't involve the falco being dumb or relying on them making a mistake (cuz if that's the case then the MU really isn't even).
I remember playing vs Tag$ at apex 2010 in a 5$ MM and I barely won because he started laser camping really hard on stadium. I was trying so hard to get in but had so much trouble. Over 450 lasers shot by him in that game. Match took over 5:30.
From personal experience, don't let it get you down. Weaving around him and trying to get in from above or below. You really do have to use the fact that he's slow to not let him get away once you get close. If he jumps away from you, then try to punish his landing. He has to land sometime. B-air being the safer choice ofc but if you can land a u-air then might as well.
Since they're running away, you wan try to trap them at the edge and cut them off. Maybe get a gimp out of it.
Also if they get too carried away with lasers under a platform, then maybe you can hit them through it on some stages. Also platform just falling through platforms while you're jumping around. Try to space a u-tilt length away or else you should get *****.