For the sake of argument, I’m going to pretend that MHJ will at worst a multi-all-pro WR with the potential to be a hall of fame talent and a top 5 WR in the NFL.

Even if true, we should pass on him. Case in point: the Detroit Lions and Houston Texans. Let’s look at the 2016 era Texans, who vastly resemble our situation. They were starting Tom Savage, TJ Yates, and Brian Hoyer. Those are 4th, 5th round picks and a FA add at QB. At WR, they had DHop and Will Fuller, and Lamar Miller at RB. Not bad.
Their defense was incredible. Watt, Clowney, Mercilus, McKinney, Jonathan Joseph, and Kareem Jackson. Holy crap.

This got them blown out by KC in the first round one year, and the next they beat a Raiders team with an emergency QB and got blown out by us as a reward. By the time Watson was developed - in his second year - the O line wasn’t quite there, Watt and Clowney were on the decline, and DHop was getting upset with being disappointing and forced his way out to Arizona. The Texans threw a ton of money at Brock Osweiler in free agency first, thinking they could get a QB that way.

Similar story for the Lions with Calvin Johnson up until taking Stafford first overall.

In this league as it is today, you cannot contend for a super bowl in spite of bad QB play. It is impossible. If you look at most starters, they are first round picks, overwhelmingly top 3 QBs off the board and/or top 10 picks. If you look at SB starters over the last decade and a half, same story with the exception of Brady, Foles, Russ Wilson, Jimmy G, Kaepernick, and Kurt Warner.

Even if we draft a bust at 3, it will be better to continue to select at the top of the draft than be mired in mediocrity thinking we’re a QB away from contending, only to find out the hard way that good QBs are rarely ever available via free agency, and never via trade without giving up your entire franchise future.