I'm not selling anything so I'm unbiased.
Blimey, it was hardly an insult!
Not every opinion is worth anything, most people know sweet FA and just parrot rubbish they misheard down the pub, to learn about stuff you have to STUDY and learn the facts, whether that's in education or the workplace.
There are opinions and there are facts, they are two different things entirely.
An intercooler acts like a heatsink, it absorbs heat from the air travelling through it depending on it's mass and its internal area, therefore a large intercooler can generally absorb more heat from the pressurised air, it can also exchange this heat with the outside air which is why front mount is better, no intercooler can reduce charge temperature below the ambient air temperature so the most power an engine can make for a given boost pressure occurs before the intercooler starts to get hot, this is heatsoak. As the temperature of the intercooler increases the power drops, a FMIC is worth about 10 bhp less power drop than the standard SMIC.
Thems the facts, form your own opinion.