collecting spirits before final?

I dont think it is neccessary to collect shadow spirits before going in o.o; on my first try doing finale I got max shadows, but it mob lagged and morrighan and nuadha dissaepared, so I had to cc and try again, but the second time, I forgot to get shadows, but when I got Morrighan's powers I got a message, something about a dark force helping shadow spirit skill, and the next thing I know, before I even fight a Daol, there was already a giant pool shadows underneath me. After killing the Daol, I tried to take the spirit from the Daol, but it said I had max shadows and could not drain anymore

Collecting spirits is not necisary. If your shadow spirit is empty a message will come up saying "A dark power fills your spirit." or something of that nature and your shadow spirit will be instantly full.

So should we remove the tip on the final, where it tells you that you should collect shadows since it really isnt needed?