I recall on a past post way back BMW may be a candidate 🤔
Equally I well recall 99% of people who bought a new car and requested a tow bar didn’t get what they thought .The Dealer called in a local towbar fitted who did the job. The Dealer then added his 35%.
The AA / Covea proposal form I recently filled in on line, as I said, was very specific about modifications even listing them .The recent FOS decision mentioned earlier will also have influenced most insurers in the information gathering at proposal time.
Listing them is covering both their and your position for the future.
Why play semantics and possibly prejudice your own claim?
Surely far better to err on the side of caution and disclose everything?