Still, if you're playing one of those builds, bosses become quite enjoyable even if you're playing a dodge + hit playstyle (except for Malenia but this is a whole different story). Unfortunately those weapons are so much better than everything else, that the endgame build variety is very low. A or S-Tier Weapons have either of these properties. This is reflected in pretty much all tier lists you will stumble on. Bosses are much more aggressive with less secure windows forcing players to either use weapons with range abilities, spells or weapons that can dish out increadible damage during these tiny windows. The emphasis is on weapon skills (Ashes of War) and no longer attacking with normal weapon skills (R1 + R2).
The design of bosses has changed massively compared to the older souls games.
Using external sources to find the way to the next boss shouldn't be a thing nowadays and given the stats of the videos there were a lot of people experiencing similar issues. Putting more emphasis on exploration unfortunately made the game a significantly worse experience than neccessary.