Yeah, for the most part, I think a $250K salary is just enough to let you in so you get trapped by the "good life". You might be able to get a nice McMansion, fancy car, nice boat, country club membership, take nice vacations, get the kids into private school, etc. But you'd have to keep working, and hoping you hold onto that $250K salary, to keep up that lifestyle. You'd most likely be living paycheck to paycheck, to do it, but many people who don't know the details of your finances might look at you and think you had it made and were "rich".
Or you could also live a much more modest lifestyle, with an average-sized house, a more mainstream car, smaller boat (or no boat at all), take cheaper vacations, etc, and be very comfortable, and quite well-off. But most people would just look at you and think "middle class".
"Middle Class" as an income, and "Middle Class" as a lifestyle are two totally different things.