Some kits flag connections made through poly or diffusions as "weak". Whether they add much "weakness" to a near minimum width transistor's drive, is a question that the flag is meant to focus you on.
Weak connection through psub or nwell for supplies would be bad. 10 ohms of silicided poly jumper might be a good layout trade if it removes a met2 routing blockage in a std cell. In that case representing the region as a PDK blessed resistor might be the path to clean reports.