Spreadsheets are excellent for getting started. They are flexible, familiar, and easy to share. The trouble begins when the sheet becomes the place where every conversation, handoff, and decision is expected to live.
A useful warning sign is repeated manual reconciliation. If someone has to compare a sheet with WhatsApp messages, emails, and memory before they can answer a simple question, the process is carrying more weight than the tool was designed for.
Another signal is uncertainty about ownership. A good system makes it clear who is following up, what changed, and what happens next. That clarity can matter more than a long feature list.
The right next step is rarely to automate everything at once. Identify one repeated pain point, map the current steps, and build a small workflow that removes the most friction.