I agree with this. I also think 'expecting' a league challenge from Liverpool when Manchester City exist is extremely harsh. They had 100+ points last season, if they do it again nobody can be expected to compete.
I'd expect at least 1 or 2 other clubs to be going into the season expecting to challenge City for the title. There's been some huge spending, teams are more used to how City play now, and its highly unlikely they're going to get 100+ points again. They're a superb team, but very few top teams are just sitting still. Liverpool (must as it burns me like the fire of a thousand suns to say it..) are getting stronger and stronger, United (despite their frankly bizarre lack of transfer activity) should still have enough to push City, and as for Chelsea its impossible to say whether the pieces will fall into place quickly enough, or whether (as we expect) it's more just a season of acclimatization before a title challenge next year.
We won the title and then collapsed. Twice. If this City team slaughter the league again like they did last year then maybe its time to start worrying, but after 1 year its just too early to start the alarm bells ringing. It's been 10 years since anyone won back to back titles, and there's been several times in that decade when we all thought one team was about to dominate.