That’s legalese boilerplate. It might be useful for actually legal disputes, but I don’t think it has much use for public relations. It could be prudent to have

That’s legalese boilerplate. It might be useful for actually legal disputes, but I don’t think it has much use for public relations. It could be prudent to have similar sentiments included in more familiar ways in the regular project description. But perhaps more importantly, if you really feel that your software “has no implied fitness for a particular purpose”. Don't do keynotes and conference talks claiming the opposite.