What the court stated in its written opinion is crystal clear, does not require your personal interpretations, and confirms our Constitution's provisions, article 1, 2, cl. 3, and article 1, 9, cl. 4, which require “direct” taxes to be apportioned, are still the law of the land “. . . notwithstanding the Sixteenth Amendment."
Since English does not appear to be your native language, let me spell it out.
"As repeatedly held, this [the 16th Amendment] did not extend the taxing power to new subjects, but merely removed the necessity which otherwise might exist for an apportionment among the states of taxes laid on income."
This means that the Amendment got rid of any apportionment requirement for taxes on incomes. "removed" = eliminated; got rid of; dispensed with, etc.
"It is clear on the face of this text [the 16th Amendment] that it does not purport to confer power to levy income taxes in a generic sense -- an authority already possessed and never questioned -- or to limit and distinguish between one kind of income taxes and another, but that the whole purpose of the Amendment was to relieve all income taxes when imposed from apportionment from a consideration of the source whence the income was derived."
This means that regarding apportionment there is to be no distinction between types of income taxes. ALL income taxes were relieved from apportionment, and it would be incorrect to subject some income taxes to apportionment by looking at where the income came from.
Here's another quotes from the Brushaber case: "...recall that, in the Pollock case, insofar as the law taxed incomes from other classes of property than real estate and invested personal property -- that is, income from "professions, trades, employments, or vocations" -- its validity was recognized; indeed, it was expressly declared that no dispute was made upon that subject, and attention was called to the fact that taxes on such income had been sustained as excise taxes in the past...in express terms, the Amendment provides that income taxes, from whatever source the income may be derived, shall not be subject to the regulation of apportionment."
In other words, Pollock recognized that a tax on pay-for-work was an excise and not a direct tax, echoing what had been previously decided in Springer. And income taxes are not subject to apportionment regardless of the income's source.
You seem to be hung up on the fact that the 16th Amendment doesn't contain express language repealing the Direct Tax Clauses with respect to income taxes. So what? There doesn't have to be express repealing language. For example, the 12th Amendment didn't expressly repeal the third paragraph of Article II relating to the election of the President. So are you under the delusion that Donald Trump is the legal Vice President (under the original provision, the runner up became VP)?
I'm done with you.