MIA TRACON Controller reported confusion that pilots are having with climb instructions on the FOLLZ2 SID.

Narrative

Aircraft X was a FOLLZ2 departure off of MIA. On check in with Departure; Aircraft X was instructed to 'climb and maintain 16;000' to which the pilot responded 'climbing to 16;000.' The FOLLZ2 departure has a restriction at MARCK of 5;000 ft.; and aircraft are instructed to climb via the SID by Clearance Delivery on the ground. The pilots leveled at 5;000 and did not continue the climb to 16;000 as they still had 20+ miles to go before reaching MARCK. However; there was an OLAHS arrival at 6;000 that was going to be a factor for the aircraft if they suddenly realized they had been instructed to climb and maintain 16;000 and not climb via so we stopped Aircraft X at 5;000 until passing the traffic. Once past the traffic; again; Aircraft X was instructed to 'climb and maintain 16;000' which they read back but then came back and asked if we wanted that now or after MARCK. Aircraft eventually climbed to 16;000 and no further issues.This is becoming a regular occurrence with the SID's at MIA that have these 5;000 ft. restrictions. Pilots are not familiar with 'climb and maintain vs climb via' phraseology and are always asking if the climb is unrestricted; which isn't 7110 phraseology and just tied up the frequency. Pilots and airlines need to review and/or train the climb via procedures and phraseology again. Also these 5;000 ft. restrictions are not needed and just cause confusion at MIA so removing them should occur ASAP.