That’s very true and that’s why Silva has to go but we can’t ignore Brands’s failure to deliver key players in key positions.
One CB (who would've been a back up to Keane and Mina really) does not detract that Silva cannot set up a team to defend well. The clean sheets at the second half of the season were a complete fluke especially as his still holds the worst defensive record from corners and freekicks than any other manager in the league.
The striker issue is a massive problem I agree. But the idea we still have two players who got what, 14 goals each, last season means we still should have firepower. Iwobi bagged 6 goals for Arsenal last season for eg. We shouldn't be an absolute mess in front of goal. There's still players to work with.
The big problem for me in the midfield. Silva hasn't adjusted to Gana leaving and the injuries have killed us.
BUT....you use what you've got. You don't play the same way when the side doesn't have the players to do so. Silva has never changed that.