I never said it was a critic's job to look around them and try to interpret what other people are thinking or feeling. I said they ought not to present their own opinion as a statement of fact to the exclusion of the possibility that anyone else is having a different reaction.
i haven't read the critic's handbook lately

but when in doubt I like to take a page from Alexander Pope's Essay On Criticism
'Tis hard to say, if greater Want of Skill
Appear in Writing or in Judging ill,
But, of the two, less dang'rous is th' Offence,
To tire our Patience, than mis-lead our Sense:
Some few in that, but Numbers err in this,
Ten Censure wrong for one who Writes amiss;
A Fool might once himself alone expose,
Now One in Verse makes many more in Prose.
'Tis with our Judgments as our Watches, none
Go just alike, yet each believes his own.
In Poets as true Genius is but rare,
True Taste as seldom is the Critick's Share;
This part's good too
A perfect Judge will read each Work of Wit
With the same Spirit that its Author writ,
Survey the Whole, nor seek slight Faults to find,
Where Nature moves, and Rapture warms the Mind;
Whoever thinks a faultless Piece to see,
Thinks what ne'er was, nor is, nor e'er shall be.
In ev'ry Work regard the Writer's End,
Since none can compass more than they Intend;
And if the Means be just, the Conduct true,
Applause, in spite of trivial Faults, is due.
As Men of Breeding, sometimes Men of Wit,
T' avoid great Errors, must the less commit,
Neglect the Rules each Verbal Critick lays,
For not to know some Trifles, is a Praise.
Most Criticks, fond of some subservient Art,
Still make the Whole depend upon a Part,
They talk of Principles, but Notions prize,
And All to one lov'd Folly Sacrifice.