Unfortunately, I think he is right. SNGs are basically solved, hence no edge from a certain limit onwards, very reg infested and barely run on any other site than party poker. The only reason they run there is because they pump massive amounts of money into the industry by paying regs to pay (>100% rakeback), but it´s a bubble that´s inevitably going to burst. The current promotion here on Unibet quite clearly shows that such efforts, while getting the games to run, make winrates incredibly small and grinding rather undesirable.
@FreedoM you've got me agreeing with Jonathan Little damn you 😉. If you aspire to be an elite level player, you shouldn't go near sng because the ceiling is very low due to limited higher stakes. But reality is >99 % have no shot at reaching anywhere near that level. A more realistic aim is for casual players to make a small profit at low stakes and for that I'd recommend mtt first as being most beatable and likely to be around for a while, then cash/sng/spin all of which can be beatable for the better players but future sadly doesn't look great for these game types.
To be honest I thought that sngs have been more or less solved for a few years with Moshman and Nash equilibrium and all that. The majority opinion seems you'll only go so high in stakes then it's more or less break even, so not something that a career can be made out of. The HU is the same and according to some online poker could go the way of chess and be virtually solved, maybe not for a few years yet though. It's going to be trickier to stop these real time solvers, some players already getting banned for apparently playing too perfect a strategy.
I'm going to disagree slightly. First of all it depends on the SNG format. For example I have noticed that HU SNGs up to the 50€ level at least are beatable for sure, and not for a tiny amount either. I would argue that HU SNGs (up to 50€ stakes at least) are almost more beatable (if you play well enough) than many other formats, because you can use reads more effectively, and there's still enough of recs and bad regs in the pool (I played some HU SNG today ). Of course against other good regs the winrate won't be great or you might be losing against rake. And bots are a growing threat for this format unfortunately.
As for the 5 mans, I think the regs tend to be worst at deepstacked postflop (edit: and also in HU), especially since many are volume grinders and don't have much time for tough decisions. So being aggro early and getting a big stack to then hopefully apply pressure on the bubble seems somewhat effective. And also the game is so complex with ICM and changing stacks that preflop around 20 BB might be a situation where more edge can be gained by implementing a more complex preflop strategy (not sure how significant this is). But probably MTTs are much better value with more recs in the pool. Anyway, I'm not an expert on the 5 mans so you should probably not take my opinion as very credible for this format.
It's one thing for a game type to be "solved" and something else entirely for humans to implement this solved strategy. Cash games have also to some extent been "solved" by solvers yet you can play them for good winrates if you are good enough.