Excessive goodwill occurs when a legacy company can no longer organically grow earnings so it has to buy other companies (perhaps over paying) to show earnings growth.
Intangibles can make a debt laden balance sheet less negative if the value of "synergy and secret sauce" are over stated and never written down.
You can see GE's Goodwill and Intangibles peaked in 2017 when Jeffrey Immelt got replaced and John Flannery started to do the write-downs for which he was sacked. Larry Culp seems to be doing it more even handedly.
https://www.wsj.com/articles/how-ge-built-up-and-wrote-down-...
https://www.macrotrends.net/stocks/charts/GE/general-electri...
from this year i think, there is something called "expenditure tax" so in case of a p&l statement, if you increase your expenses to reduce NPBT, you pay MORE expenditure tax and vice versa so even this loophole is now effectively closed.
The only thing not subject to interpretation is cash, but you have kind of the reverse problem: most of the time, it's difficult to intepret anything from it... of course, that's why modern accounting was invented. As we say in French: c'est le serpent qui se mord la queue (the snake's biting its own tail).
I am generally pretty pro expecting the MtMing of liquid assets, but very sympathetic to areas where hard to price illiquids are unpleasant