This argument about 'stat padding' is a bit stupid really. In most games, goals are important. It is only those where you see 4 goals or over really where goals start becoming a bit less so, but even then goal difference is something to consider.
Winning goals shouldn't get more credit than any other goal. In a 2-1 victory, the winning goal wouldn't be a winning goal without scoring the first one, so why is it considered better? Also, scoring the second in a 2-0 win helps to secure the result. A 1-0 lead has never been a safe scoreline; even 2-0 isn't very safe. It is a silly argument to try to discredit a player.
Reaching a secure scoreline is very important in matches, otherwise what is the point of trying to score more than one? That is pretty much what people are saying by pointing to 'stat padding'. You are pretty much saying that there is no point in scoring more than what is necessary to win, but without the successive goals, you don't know how the game would pan out. A 2-1 lead can easily be overcome by the opposition, so a 3-1 lead is much better.
In their 4-2 result over Torino, Lukaku got 2 goals and 2 assists. Pretty much people are saying that the 4th goal was not needed, but how do you know what would have happened if the fourth goal wasn't scored? It could have easily ended 3-3 instead with 2 dropped points. People would be questioning why Inter didn't score a fourth then.
In the end, his goalscoring record is fantastic and his assists aren't bad either (You have to remember he played for West Brom and Everton, as well.).
Premier League - 113 goals and 42 assists in 252 games
Serie A - 40 goals and 7 assists in 58 games
Europa League - 20 goals and 9 assists in 33 games
Champions League - 13 goals and 3 assists in 27 games
FA Cup - 13 goals and 4 assists in 19 games
Top 5 striker in the world. People keep saying that he is the same as he was here, but he has actually improved quite a bit. I think people forget that we signed him when he was 24/25. He has also improved over last season
Serie A (19/20) - 23 goals and 2 assists in 36 games (0.64 goals per game; 0.69 goal & assists per game)
Serie A (20/21) - 17 goals and 5 assists in 22 games (0.77 goals per game; 1 goal and assist per game)