Well, I'll explain it and let's see if we both agree.
Yes, prior to EI you had to work at least 15 hours per week to get an insurable week of work. It meant that you had 12 weeks of 15 hours and you could qualify in the highest unemployment regions. But that week-based system actually led to a lot of employers making sure they only employed people for 14 hours. There are actually more part-time workers who qualify for EI now than before.
The individuals who now work for 14 hours, 12 hours, or 10 hours, possibly in two or three jobs, which a lot of people do these days, now have all of their work insured. Before, an individual could actually have three of those kinds of jobs and not have one hour of insurable employment. Those part-time workers are insured.
Yes, it means that somebody who had been working 15 hours for only 12 weeks has to either increase those hours per week or work longer than 12 hours to qualify. The other thing it did was you got a week insured before, so somebody who was working 50 hours a week for only 10 weeks, which can happen in the construction industry, did not qualify for UI. The person who now works 50 hours for only 10 weeks gets 500 hours of work and qualifies for EI. The hours-based system actually created a lot more equity across the system and stopped employers from creating distortions in the system.