Obviously there have been changes, also because the artisans (bakers) who baked bread a century ago were different from the current ones.

Furthermore, over the last century flours prepared with wheat from various parts of the planet have flowed into the local market, while in the past the raw material was essentially indigenous.

However, the best bread in the world is still prepared in my country.

Global warming will lead to rising cost of bread, market upheaval and political unrest: Study. Climate scientists are warning that climate change-induced droughts could devastate more than half of the world's wheat fields by the end of the century, triggering food shortages, market upheaval and political unrest. https://www.bakeryandsnacks.com/Article/2019/09/27/Global-warming-will-lead-to-rising-cost-of-bread-market-upheaval-and-political-unrest

In general, climate change is putting food production at risk. Yield growth for wheat, maize, and other crops has been declining in many countries due to extreme heat, severe weather, and droughts. By some estimates, in the absence of effective adaptation, global yields could decline by up to 30 percent by 2050. https://unfoundation.org/blog/post/climate-change-and-the-future-of-food/

Yes there is change. Initially there were very few brands of bread manufacture who used to have a bread brand with unique tastes. But now there are so many bread makers and the uniqueness has been lost.