Well, so does PML i.e. PML sounds bad. No organisation start out perfect.
Frankly regardless if it is MA or PML, both will have their fair share of positive/negative feedback. However if for fair/neutral comparison (usually as humans, we do), lets look into their 'birthdays'. MA being 'young', some margin of negative feedback should be expected as it serves as lessons learnt for improvements while PML (given decades) should not have many negative feedbacks... but seem like they do.
Afterall it boils down to each individual's experiences, views, expectation, etc etc, therefore judge for thyself is e best practise e.g. some say food-A is nice, while u may find it not nice.
Cents worth and not related to MA.