Varieties of criticism
Conservative criticism has nothing much to do with "left-wing" or "right-wing", because left-wing people are often very conservative, in the defined sense, while right-wing people can also be very radical, in the defined sense. The difference between "radical" and "conservative" has more to do with the belief in whether "a change to something genuinely new" is really possible and necessary. Radicals typically believe strongly that such change is highly desirable and necessary, and that it can be achieved. Their criticism is that there is "not enough" change. Conservative critics, by contrast, are very skeptical about any such change, because they feel the change is really "just another form" of something that already exists.
Conservative wave
The subsequent economic crisis of 2015 and investigations of corruption scandals led to a right-wing movement that sought to rescue ideas from economic liberalism and conservatism in opposition to left-wing policies. The growing numbers and influence of strongly socially conservative and prosperity theology-believers among the evangelical Christian communities in Latin America has also been pointed as one of the factors behind the phenomenon.