Crystal Palace is indeed improving; they even have a very strong mentality when they reach finals, destroying the dreams of strong teams. They previously defeated Manchester City in the FA Cup final and now they've destroyed Liverpool in the final and won the title. However, I still doubt Crystal Palace's ability to compete in the Premier League. I'm not even sure they can compete in the top four, even though they've improved.
Competing in the Premier League is indeed difficult because every team needs to be more consistent from the start of the season to the end. But I'm eager to see how Crystal Palace performs next season, even if you still have doubts about their ability. However, I'm quite the opposite, because with such a surprising result, they certainly have the ability to compete at a more intense level in the Premier League next season.