Honestly, I find this debate a bit pointless as presented, since it mostly depends on what the table expects. Yes, fudging at a table that expects fights to be totally "fair" and unbiased, and with players who are playing as sport and want victories to be theirs (and consider this playing "well") is bad, it's not what the players expect.
On the other hand, fudging at a table of players who want to enjoy a cool epic story where they are the heroes is certainly a valid way of DMing, in addition to the DM playing probably more using "ignoring the dice" in the DMG.
So I think that the views expressed so far on fudging express more the way to play at the table (with all associated bells an whistles like "The Role of Dice" and "railroading" - which, by the way, is the way all AP and most modules are written anyway, I don't think many players play a complete sandbox) than direct views on fudging itself.
For example, for me, I have had portions of my RPG life where there was 100% no fudging (including a huge campaign where it was "players roll all the dice" which we invented before it was
badly written in the 3e UA), and now a long portion using 5e where it is very much story orientated, with "ignoring the dice" being the standard method and some minor fudging (by all DMs, who are also players in other campaigns) when it makes the game more interesting.
In the end, for me, it comes down to you trust your DM:
- Trust him to create fair challenges that you overcome by your wits.
- Trust him to create incredibly interesting stories that you direct through your characters actions.
And personally, I ALWAYS trust my DMs, it's a matter of principle...