In what universe is the F35 struggling? There are issues being dealt with, but it has a high rate of production as is being flown by major US allies and is flow

In what universe is the F35 struggling? There are issues being dealt with, but it has a high rate of production as is being flown by major US allies and is flown in regular service. Do you have any stats or knowledge detailing why the F35 might seem to be struggling? Note: I've worked on the F35 project, so have fairly decent knowledge on the issue. I'm pretty sure you're making stuff up.