Well, this isn't so much a question of whether there was progress at all, because, as you're saying, the industry was booming all over Europe, but a question of

Well, this isn't so much a question of whether there was progress at all, because, as you're saying, the industry was booming all over Europe, but a question of what parts of the Russian Empire would benefit from it the most. One would think that a Russian Emperor would do everything to make sure that it's the metropolis that gets the cake, not the peripheries. All the more that Russia had been lagging in the industrial development, as would later be brutally demonstrated during the Revolution of 1917, so focusing on the western provinces would seem like a misinvestment (clearly, in the case of a war they would be the first ones to be chopped off). Of course, I'm not saying Alexander II was a covert lover of all things Polish. In fact, at times he, just like Alexander I during the Kingdom of Poland era (1815–1831), would have to back down under the pressure of the Saint Petersburg elites, who were not happy with a favourable policy towards Poland. Intuitively, one would think that a Russian emperor would put the interests of the metropolis first, and use, or even exhaust, the peripheries for the good of it. It's what the British Empire would do, for sure. ;-) Yet, under Alexanders I & II it was different. Which is why I think he deserves a radically more nuanced description than an occupier.