@Sam Katawazi I think Wendy is a relatively popular character, which means that she will have a fair number of people that either really like her or hate her. It’s similar to what has happened with Kyle. Kyle is arguably one of the most prominent characters in the show as a member of the main 4 boys, which has given him a lot of complexity as a person through character development. The fact that Kyle is so multidimensional means that there are bound to be people who will form strong opinions on him, which is true of any character that is well-written.
The same thing can be said about Wendy, who is one of the few female characters with a defined personality along with Heidi. Like Kyle, Wendy is flawed and has many layers to her character, so she is going to trigger mixed reactions from many kinds of people.
There will be a large amount of people who will support and appreciate her character, yet there will always be a small percentage that chose to dislike her and hold a negative opinion of her. This is something that is inevitable when you are a part of a fandom. Everyone will have their own set of views and opinions, so it is best to just ignore the haters and simply love who you love.
There is no reason why you shouldn’t be allowed to like Wendy if you really enjoy her character. I personally am neutral in regards to Wendy, as I have never focused too much on her character, but have always thought she was one of the more likable girls and appreciated her confidence and strength.