"At the top of the notes you'll see a special section for Kalista, Ornn, and Sejuani, all of whom have been much stronger in pro play than regular play. In all three cases, we're reducing the utility they offer to coordinated teams and offering them strength that's less tied to perfect timing, positioning, or communication."
"While Ornn doesn't have as lengthy a track record of competitive problems as Kalista, he's similarly shown much stronger results in pro play. He has no losing matchups when strong, making him a safe choice in any comp, and his ult locks enemies down from a distance so allies can clean up the kill without Ornn actually having to do his job as a tank. We're reducing these strengths and investing that power into Ornn's passive."
"The broad angle of approach for these changes is "reduce crowd control and increase damage" to make Sejuani's success less dependent on ally follow-up (or set-up in the case of melee allies priming E). We're also reducing Frost Armor's massive spike of defenses to extend its duration and give Sejuani more baseline durability. This ties Sejuani's responsibility of soaking damage less to perfectly coordinated teamfight initiation"
I understand reading is hard, but I'm confused as to how you get to the patch notes to know what to complain about but are incapable of reading the text explaining why they are making changes.