Did you know that there are multiple addons out there that can competently handle boss timers, cooldowns, and announcements? Did you know that not every one of those is named Deadly Boss Mods? By far the most popular, DBM has set the standard in terms of features and relative ease of use for a category of addons that has a high potential to overcomplicate things.
Instead, the addon community has created niches and fanbases around its labors of love, creating the juggernaut boss mods that we have today. Deadly Boss Mods sits proudly in the Addon Kingdom with BigWigs and Deus Vox Encounters (DXE) as champions of letting you know that you're about to wipe the raid because you're standing in the wrong stuff.