I don't think he does have a point though. It doesn't matter how many were there against Kiev. It's completely irrelevant to this situation.
We have 42,000 season ticket holders of whom nearly half are on the CL scheme. So no more than 24,000 people tried to buy tickets on Monday morning (even assuming they all tried) and instead of doing that over 2 days, as they should have done (and eventually happened) they tried to do it in 5 hours. Because of their lack of planning, thousands of people were seriously inconvenienced.
They also, either deliberately or through incompetence, allowed people to buy more than one ticket. So if you had been to all 5 CL games but were only a Cityzens member, you might have not got a ticket whereas someone who hasn't ever been to a single game this season might well have got one. That's the problem here.