It's not complaining about Tavares, it's looking at the big picture. As someone else said, the Leafs became obsessed with "making a splash" and were interested in Stamkos before Tavares. I don't think they thought it all through, and they openly stated -- "When you have a chance to get John Tavares, you do it and figure the rest out later." That sounds perfect until it's time to do the figuring out and ice a team with championship-caliber depth.
The blueprint was there -- the Pens, Caps, Hawks, Kings, Bolts, Avs all built from the ground up with drafted, homegrown talent. But the Leafs had a vision. We won't know if it was the right decision for another 5 years -- or maybe never -- but it seemed like an emotional purchase at the time.
To your point -- yes, mostly everyone was thrilled with the signing. That is certainly true. But some analyzed it through a hard-cap lens and had questions. I think mostly everyone, including Leafs management, believed the kids would be so thrilled with the signing that they would all give the Leafs hometown discounts. Everyone was wrong, including Shanny who said live on TV, "We brought John Tavares in so the other guys will need to take a little less to play for the Toronto Maple Leafs." Then all three of the kids took Dubas to the shed lol.
I think it's fair to suggest that they Leafs made an emotional, impulse buy. They wanted to buy a Stamkos and when they couldn't they bought a Tavares instead. I just wish they locked up the kids to lengthy extensions before they played the market, that's all.