Sure everyone can, but some start the blame game even after one gossip Tweet and they are just doing bad for their own mental health if they care that much.
It's always the same year after year though. People completely implode before it's even July 1 and we haven't made a signing, go completely ballistic, then by the time August rolls around, we have 2-3 major signings and they all expect us to win the league again. There's obviously a middle ground and you can point to other sides making signings already, but personally I don't believe that tons of signings are the crux of making a good team -ANYWAY-, I vaguely remember spurs using all the Bale money to sign a ton of footballers, have a bad season, only for those players to finally bed in and give them a run at the league title. Players can improve, we've got Garner and Hannibal to mature and come in (I'm certain Garner will play a part as well, he was so good last season for Forest).
Making a team work is the key. The reason everyone was so insanely disappointed last season is because there IS talent in the team, Sancho and Rashford and Bruno have proven as much in the past, and Varane is a four times CL winner. Even Maguire had an excellent season not 2 years ago (which is quickly forgotten), and really if Ten Hag kept the exact same players he's got, I think personally he'd embarass Rangnick and Solskjaer in the results department, against everyone excepting the obvious big guns like City/Pool etc. But for what it's worth we obviously need signings in midfield, it's desperate, but I'm 100% certain we'll make them, just got to be patient. The corollary though is I felt similarly about Ole's first window when we lost Herrera and didn't sign a replacement and felt like our midfield was going to get demolished every game (which ever since then, basically has been.) We need quality there or we're not going to challenge.