There is some truth to this, but chance creation was not our problem, finishing was. I think the main difference between us and teams like City and Arsenal last season was the distance to the goal when winning the ball back, i.e. a high defensive line. It is easier to create bigger chances when the ball is won closer to the danger areas. The signing of Onana should help massively with this, and a striker that can occupy the oppositions centre backs should help a lot as well with creating space. Statistically we should expect more goals this season just based on our underperforming last season but I also believe the type of players ten Hag has targeted will make us a lot more dangerous. Mount is comfortable in tight and congested spaces and areas of the pitch, which we'll need in midfield if we play a higher line.
All in all I'm quietly confident our scoring will increase notably this season. We might start a bit slow, given that the De Gea/Onana change is huge and some player may need some time to get used to it, but the signs are pointing in the right direction if you ask me.