And how long do you plan to own it? No need to disclose that to the seller, but a short expected holding period makes unresolved resale questions more significant to your own decision.
The seller is allowed to dislike a credit request and reject it. That is different from proving you breached anything. Don’t let emotionally loaded language replace an answer about the written contingency.
What is the response deadline? A sound position can still be lost through delay. Get the inspection findings, questions and proposed response to the solicitor before the contingency date rather than negotiating informally past it.