Ambitious signings if you get it wrong can be even more deadly than no signings. People love citing the Cech window as a terrible window which led to 2nd but then gloss over the 100m window which sent us spiralling out the CL and cost Wenger his job. Spending money does come with its own risks.
Also, medium level signings aren’t going to cut it. People don’t want anyone that’s performing better than Jesus. If that were true, people would be happy with Trossard, Havertz and Martinelli, but they aren’t. People want another Saka, but for the left side.