A lord would probably have a more positive view on feudalism because they would be in the upper class and therefore have all the commodities and luxuries that come with it.
However, a peasant would most likely have a negative look on it because of the fact that they are the lower class and therefore are the ones that are oppressed by feudalism.
In all, feudalism is nicer to the rich and mean to the poor, so the rich, such as the Lords, like it, while the poor, such as the serfs, dont :3
Hope this helped XD