You missed my point. I am saying that today alkaline will leak regardless of who made them unlike years ago. So I think it has to do with some kind of goverment regulation requires them to use a formula that is more likely to leak.
Noone cares about your point, we only care about what works properly to spec and doesn't leak. The fact you keep exerting that narrative doesn't help you any.
I won't be using EBL NiMH ever either, some not so positive reviews of large capacity losses which can be as bad as 15% after a few charges and 50% after a year. As well EBL lithium's having different capacities and outright failures (doesn't inspire confidence). Their 9V isn't a 9V except in name, it's basically a 7.5V battery according to their own discharge curve and as these are often over exaggerated I'll take that with a grain of salt.
No idea if it's just rebranded crap. They say on their page the brands registered in the UK, however that company also comes back as a chinese company. So seems a bit chicken or egg or chicken poop to me.
Edit:
Your mileage may be totally different on the ones you got. I'm just saying it has the hallmark of chinese rubbish already. I'd do a charge/discharge cycle about 30 times and check before vs after discharge capacity between each battery. In other words establish a trend, and if you see a significant change or outliers blame it on the formula and government (just kidding, return them of course).