TBH i haven't seen much of Haaland and Nunez but the stats from FBref suggest otherwise
Here a little comparison of them with a few other strikers, all stats are per 90 minutes from all club games in the last 365 days they played:
Player | Nunez | Haaland | Ronaldo | Firmino | Kane | Richarlison | Mbappe | Immobile | Lautaro Martinez |
Pressures | 15,24 (53) | 12,56 (27) | 6,54 | 23,48 | 10,53 | 21,05 | 8,09 | 15,73 | 15,00 |
Successful pressures | 3,22 (26) | 3,87 (46) | 1,66 | 8,62 | 3,06 | 5,14 | 1,92 | 3,56 | 4,25 |
successful pressures % | 21,2% (2) | 30,8% (93) | 25,3% | 36,7% | 29,1% | 24,4% | 23,8% | 22,7% | 28,3% |
pressures (def 3rd) | 2,49 (89) | 0,21 (1) | 0,87 | 2,81 | 0,75 | 3,17 | 0,41 | 0,86 | 0,91 |
pressures (mid 3rd) | 5,72 (40) | 3,79 (8) | 2,70 | 10,68 | 4,18 | 8,45 | 2,14 | 5,60 | 5,97 |
pressures (off 3rd) | 7,04 (48) | 8,56 (74) | 2,96 | 9,99 | 5,60 | 9,42 | 5,53 | 9,27 | 8,11 |
Of course Firmino is an absolute pressing monster, Richarlison also seems like one. While we all know that Ronaldo and Mbappe e.g. don't really care too much about pressing. So they are a lot better than "lazy" players but at the same time not close to really intense pressers.
For Nunez and Haaland i added the percentile against all other strikers in the brackets. So you can see it's not like i chose intense pressers to make them look bad, they are just not pressing that much. Haaland is quite a successful presser while Nunez works a bit harder but the stats suggest that his pressing is quite unsuccessful.
I know, stats aren't everything. But at least they suggest that it isn't true that these 2 are "extremley intense pressers".