This is a very controversial statement. I think that if you compare any average casino with any of the best online casinos, the comparison will not be in favor of the latter. An offline casino is always an atmosphere of a holiday of adventure and a lot of emotions from other people, and an offline casino is just another evening in front of the computer.
You got a point.
But I think what he's trying to say was since we've got no choice but online gambling sites, people started to adapt it. Government even allowed it because it could lessen the people that could go outside just to play in the land based casino because way back 2020, COVID-19 was too wild compare to now that it somehow lessens because the vaccine was already released in public.
At some countries, land based casinos already started to operate but there are more countries where they still prohibit land based casinos to operate, therefore people still appreciate online gambling sites.
If we compare online gambling with just being locked up because of a lockdown, then of course it will be a very exciting opportunity (and by the way, usually in online casinos there are chats where you can even get a little human communication and emotions). But I think any person who has visited an offline casino at least once will say that when compared to an online casino, an offline casino always guarantees a lot more emotions and pleasure.