Well, as a L44 Fury Warrior, the information is outdated in that the entrance is now guarded by two (2) and sometimes three (3) wild boars which respawn and pursue you into the cave fairly quickly after you get past them at the entrance. The wild hogs also appear throughout the run through the cave, along with the walking jellyfish and various Ashvane villains. You basically don't get to any point where you have room to breathe (much less time to plan your next moves), and assuming you're able to kill Morrison you have an equally long battle to get back, and if/when you die inside the cave you aren't going to get to your corpse and portal out in time to avoid respawned attackers and highly probable death again. So generally, unless you are somewhere at L60 or higher, dying in the cave is inevitable and nvolves being resurrected with resurrection sickness and durability loss, porting back to your innkeeper, getting equipment repaired and then flying back to Temple of Alunda and starting all over again with every expectation of repeating the cycle again ... and again ... and again. And again. It's loads of fun.
And BTW, for those who have encountered Ashvale before, the villains here are as tough as Ashvale villains have ever been, and in keeping with Blizz's thoroughly modern notions of structuring fights so that regardless of how industrious you are in thinning mobs on your way to the target you can count on being mobbed even when you have taken out every villain you encounter and everywhere you look before any given melee the only characters in sight are you and the NPC you are confronting. Blizz has gone from creating challenging quests to creating quests that are set up to make it as close to impossible as they can for the Solo to make it through at all. Behavioral scientists call this "setting one up to fail." I honestly don't see any reasonable way for a Solo to complete this quest as a Solo (though I'll keep at it) unless (maybe) you are at least at L60 if not 70, and I've played Solo for years. Usually in the past you would see a quest such as this with a recommendation of at least 3 players. Not here, though. In order to succed without putting an actual group together you need at least to fall in with other players on scene and hope that the patchwork band will somehow stick together and help each other enough to get through, which IME is an iffy proposition at best. This is the quest most stacked against the player of any I've come across yet in the Dragonflight iteration. I can only infer that it is part of an insidious campaign to eliminate solo play from WoW altogether.