Is it good practice to convert columns with a number to a range between 0 and 1?
I think there si some confusion with the quantile transformer : https://scikit-learn.org/stable/modules/generated/sklearn.preprocessing.QuantileTransformer.html#sklearn.preprocessing.QuantileTransformer it actually scale the values to a 0-1 range. the goal is to get a uniform distribution. It serves a different purpose than minmax scaler imho. Notably it could be helpfull if you get outliers. 

To get a bigger overview on what different scalers do :  https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#sphx-glr-auto-examples-preprocessing-plot-all-scaling-py